2005-10-19 03:28:32 pm Source: Bureau of Agriculture of Changtai County: Zhangzhou City Bureau of Agriculture plant quarantine stations Lin Zhiping, Xie Feng, Lai Haiping Views: 1263
(A) Phytophthora capsici
Symptoms: The victim suffers from irregular brown to dark brown spots from the fruit pedicle. A few days later, the lesions spread. In the wet weather, a layer of white mold grows. The flesh of the fruit is sour, the peel is flaky, brown juice is found. Outflow. The head of a flower blooms brown and decays, and the diseased part produces white mold. The disease also harms pedicel, resulting twigs and leaves.
Control methods: reduce orchard humidity. To build a new orchard, choose a site with loose soil, well-drained and sunny areas. For the current results park, pay attention to cultivating soil, increasing organic fertilizer, improving the structure of garden soil, and digging trenches for cultivation, which will facilitate drainage, reduce humidity, and reduce incidence. Pruning and cleaning orchards. After harvesting the fruit, cut off the branches, branches and weak branches of the canopy to remove the diseased fruit and rotten fruit. Spray protection, in the orchard with severe disease, spray once in bud stage, young fruit stage and fruit near maturity stage. Orchards are generally used once in the fruit's near maturity and maturity. Pay attention to the weather conditions and take the spray protection.
Drug control:
Prescription I: Spraying with 43% of raw material and 500 times of liquid;
Prescription II: 72.2% Polik liquid 800 times, spraying;
Prescription 3: Use 70% Anric 800 times, spray;
Prescription 4: Spray with 25% metalaxyl 1000 times.
(b) Lychee anthracnose
Symptoms: The leaf blade victim starts from the leaf tip or leaf margin and rapidly expands toward the leaf base. It is scalded, round or irregular, showing obvious or inconspicuous moire, with obvious disease and health, and young leaves. The top is wilting, and it dies after it. The top of the diseased tip appeared wilting and then withered, the diseased part was dark brown, and the whole shoot was withered later. Flowering branches are damaged and their ears are browned, resulting in falling flowers. Onset of young fruit, first small yellow-brown spots, followed by dark brown, water-like. Fruit in the near-mature or mature stage of disease mainly in the fruit pedicle, lesions are round, brown, brown edge, the middle orange sticky small particles appear, the taste and corruption of pulp.
Control methods: to strengthen the cultivation and management. Adhere to the normal cultivation and management work, pay attention to plough the soil, increase the application of organic fertilizer and phosphorus and potassium fertilizers, implement formula fertilizer, avoid partial nitrogen fertilizer, in order to enhance tree vigor and improve disease resistance. Clean the orchard. Combined with pruning in the winter, the leaves of the diseased leaves are cut off, the leaves of the ground are removed, and burned to reduce the source of bacteria. The young shoots of the new shoots have been developed but not yet green, buds, and young fruit 5 to 10 mm in size; medication for heavy orchard production in the past years, should be sprayed 2 or 3 times in flower buds and young fruit stages. .
Drug control:
One prescription: 43% of Dashengfu 500 times liquid + 0.2% urea, spraying;
Prescription 2: 25% chlorpromazine 1500 times, spraying;
Prescription 3: 25% chlorophyll 4000 times, spraying;
Prescription 4: 50% rich star 1500 times, spraying;
Prescription 5: 1.5% bacteria eradicate 1200 times liquid spraying, in the 4 to 5 months, combined with pest control mixed spraying, can receive the effect of disease prevention and pest control.
(c) Litchi ghost disease
Symptoms: When young shoots are damaged, the young leaves become small, curved, light green or yellow-green and cannot be unfolded, or have a distorted, mottled mosaic; petiole broadens, and some become banded deformed leaves. In severe cases, the new shoots are shortened and clustered, showing a broom-like shape, and young leaves fall off into bald branches. Spikes are affected, internodes are shortened, clusters are clustered in flower spikes, and flowers are deformed, densely integrated into the ball, easily falling off, and not as strong. Harmful shoots and spikes of litchi and longan.
Control methods: Quarantine is banned, seedlings, scions and diseased seeds are prohibited from wards; disease-free seedlings are cultivated. Seed-bearing rootstocks were cultivated from the disease-free parent trees, scion was taken from the disease-free, high-quality and strong mother plants, and grafted seedlings were planted; the pest control was strengthened. The shoots were sprayed to prevent litchi and wood lice.
Drug control: spraying 1.5% of powerful virus Weihui emulsion 1000-1500 times, 3.95% of virus will be 800 times and other drugs.
(four) ulcer disease
Symptoms: Also called rough skin disease. The stems of the poles lose their luster, gradually shrinking, rough cracking, protruding nodules, serious xylem brown, the above sticks dead, leaves fall off, the whole tree vigor decline. There are many wounds, many pests, and bacteria are easy to spread when it is hot and humid.
Control methods: Minimize the wound during cultivation, cut the shady canopy, cut off or short-cut large branches, and burn concentrated, strengthen the management of fertilizer and water, fertilize loose soil and apply fertilizer outside the root, so that the tree vigor gradually recovers.
Drug control:
Prescription I: Onset of the trunk or main branch, including the removal of the disease department in time, and then using 72% of the epidemic net 0.5 two + 75% chlorothalonil 0.5 two against 5 kg of water or 80% of the necessary 1 two against 5 kg of water or 70% Anric 1 and two pairs of 5 kg of water dubbed liquid, coated once every two weeks, use these three formulations for rotation, and even more than three times until the symptoms disappear.
Prescription II: When the collaterals become infected, spray the 0.2-0.3 Baume of lime sulfur or 70% of Anric 1 and 100 kg of water to protect the new branches from harm.
(E) Acid rot
Symptoms: Harmful ripe fruit, starting from the fruit pedicle, brown at first, then expanded to full fruit, turning the peel into brown, the pulp rot and sour. When wet, the diseased part has fine powdery white mold.
Control methods: to strengthen the cultivation and management, pay attention to the prevention and treatment of litchi, elephant lice, locust worms, harvesting and storage and transportation to minimize fruit damage; clearing the ground in winter when the drop of fruit, reduce the source of the disease.
Drug control:
Prescription I: 50 kg of water plus 25% of prochloraz 25 g + 100 grams of Fuyou Ling formulated liquid before spraying.
Prescription II: dip medicine protection. Postharvest lychee fruit with 50 kilograms of water plus 25% fresh-keeping grams 35 grams + 2,4-D5 grams + Fuling Ling 0.5 kg dipping fruit 1-2 minutes.
(6) Leaf spot
Symptoms: gray spots, lesions from the tip of the leaf to the edge of the expansion, round to oval, auburn, after the synthesis of irregular large lesions, turned gray, the size of the needle can be seen on the black spots.
The white star type, with a small brownish brown spot on the leaf surface, turns grayish after expansion, has a brown edge, and has several small black dots on it. The lesions on the back are gray-brown and their edges are not obvious. There are sometimes yellow halos around them.
Brown spot type, round or irregular brown spots, enlarged central grayish brownish brown, brown edges. The back of the leaf is hazel, with dark spots on the upper part. The lesions synthesize large lesions that spread to the leaf base and cause defoliation.
Control methods: Increase the use of organic fertilizers, remove water from the orchard in a timely manner, renew pruning and sensational orchards, grasp the clean gardens, remove litter, concentrate burn, and prevent and control various insect pests. For orchards with history of onset, they should be checked frequently in summer and autumn, and if there are any diseases, they should be sprayed and prevented in time.
Drug control:
Prescription I: 77% of copper, 90 grams + 50 kg of water, spraying.
Prescription 2 : 25% Epiphylla 13 ml + 50 kg water sprayed.
Prescription 3: 25% chloramphenicol 30 ml + 50% anthrax covered with 30 g + 50 kg water, spraying.
(7) Algae spot disease
Symptoms: There are gray-green lesions on the leaves or on the old leaves. They turn into purple-brown afterwards. They are nearly round and have irregular edges. They have orange-brown velvet and turn dark brown.
Control methods: Increase the organic fertilizer, eliminate water in time, and reasonably trim. After the clear garden and early onset of medication control.
Drug control:
Prescription I: 50 kg of water plus 77% of copper 90 grams of liquid preparation spray;
Two prescriptions: 50 kg of water plus 30% of green decoction 100 ml of liquid spray.
(8) Coal smoke
Symptoms: Dark brown moldy leaves appear at the beginning of the leaves, followed by a velvety layer of black mold. In severe cases, the whole leaves are covered with black mold.
Control methods: Properly pruning, strengthen fertilizer and water management, and timely control of scale insects such as scale insects, whiteflies and roundworms.
Drug control:
Prescription I: 50 kg of water + 20% killer 50 ml + 25% chlorophyll 13 ml, spraying.
Two prescriptions: 50 kg of water + 40% of Zhen Zhu Li 35 ml + 25% Prochloraz 35 ml, spraying.
(9) Duck head green
Symptoms: Near fruit to dark green near the fruit shoulder, black dots distributed fruit surface, affecting the commercial value of litchi.
Prevention methods: old trees retract and update, sparse dense branches, and sprays to prevent warts.
Drug control:
Prescription I: 50 kg water plus 15% broom net 35 ml + 60 ml green turquoise, spraying;
Two prescriptions: 50 kg of water plus 1.8% of cadmium 25 ml + green blue 60 ml, spraying.
(10) Litchi
Symptoms: commonly known as stink bug, urine cabinet. Adults, nymphs sucking young shoots, tender shoots, affect normal growth, severe shoot shoots. In the stalks and young fruit stalk sucking juice caused by falling, falling fruit, in the frightened will discharge odor, sucking leaves, spikes and young fruit will cause brown spots, the damage caused by the damage is conducive to downy mildew The invasion of pathogens causes downy mildew, and serious hazards can lead to yield loss or even loss.
Control methods: manual killing, using the characteristics of false death of litchi pods and low temperature activity below 10°C in winter, shaking the branches vigorously, so that the adults fall to the ground to eliminate and eliminate. May spawning period, manual removal of egg masses. The use of flat-bellied bees to control the tree more than 30 years old, tall tree crown, difficult to spray control of the tree, the effect is particularly good.
Drug control:
Prescription I: The resistance to overwintering adults is low. Before mid-March, when female adults are not spawned, 90% trichlorfon crystals 65 g and +18% double 100 ml + 50 kg water can be sprayed.
Prescription II: After the egg incubation period of April to May and the 3rd instar of nymphs, 2.5 ml of Riesling or 35 ml of 30% Peachin 35 ml or 10% beta-cypermethrin 35 ml and 50 kg of water are sprayed. The above three agents are used interchangeably. .
(11) Tillers
Symptoms: During the young fruit period, the larvae feed on the cortex of the fruit nucleus, resulting in fruit drop, fruit coloring period, damage, seed nucleus hard, larvae only harm the fruit pedicle, leaving worms, seriously affecting the yield, post-harvest larvae drilled tender or new leaves The damage of the midrib causes the veins of the leaves to become brown, and the tunnel is filled with insect feces, which affects the normal growth of shoots.
Control methods: timely pruning after fruit picking, cutting off dense shoots to make the park airy and clear; timely put autumn shoots to reduce hazards; young fruit should be collected in time to focus on the burning down, reduce the early insect source; control winter shoots, The source of food is interrupted and the source of overwintering insects is reduced. The key to timely control of spraying is to pay attention to forecasting and forecasting. It can be sprayed 1-2 times when the fruit is hooked, and sprayed 20-22 days and 10-12 days before the ripening of litchi. 1 time, if it is best to delay the harvest of orchards plus one spray.
Drug control:
Prescription I: 30% peach Xiaoling 35 ml +18% insecticidal double water agent 100 ml + dead insect net 50 g + 50 kg water, spraying.
Prescription II: 2.5% Riesling 35 ml + 25% diflubenzuron 50 ml + 40% speed anti-50 ml + 50 kg water, spraying.
Prescription 3: 1.8% cadmium 25 ml + 4.5% high efficiency cypermethrin 25 ml + 50 kg water, spraying.
(twelve) 瘿螨
Symptoms: Chengyu, Ruoqiang harm the tender buds, leaves, spikes and young fruit, sucking juice, leaves damaged parts, the shape of "felt", the victim blade depression, convex leaves, resulting in distortion of the leaf surface, damage flower spike The flower expands into a puffy ball, which does not bloom, and the young fruit is easily shed.
Control methods: post-harvesting pruning, cutting off pests and branches and dense branches, concentrated burning, reduce the source of insects; strict control of winter shoots, reduce the population density.
Drug control:
Prescription 1: After clearing the garden, spray 30% sorghum 60 ml + 50 kg water, or 0.3-0.5 Baume degree lime sulfur 1-2 times, or 50% sulfur suspension 150 ml + 50 kg water.
Prescription II: spray control after litchi germination until the felt-like grayish white, 50 kg of water plus 1.8% of mothite 25 ml, or 2.5% of Riesling EC 35-50 ml, or 20% of fenpropathrin EC 35-50 Ml, or 40% chlorpyrifos cream 35 ml, the above four agents are used interchangeably, and can also treat other pests.
(13) Small teapots
Symptoms: Adults and nymphs are harmed on branches that grow weaker and weaker. The damaged branches form annular tunnels that impede the transport of water and nutrients and affect normal growth. Severe branches die. In the event of a strong typhoon, it is easily broken at the trunk road. It also affects the quality of the fruit, the fruit is small and deformed, the flesh is thin and tasteless.
Control methods: Strengthen fertilizer and water management and increase tree vigor. After harvesting the litchi, pruning the pests and burning them centrally.
Drug control:
Prescription I: 50kg water + 40% chlorpyrifos 50ml, or 50kg water + 40% fast anti-emulsion 50ml, or 50kg water + 1.8% kerattin 25ml + oil emulsion 250ml spray to kill scattered out Adults. Note: The above three formulas should be used interchangeably.
Prescription II: In late February and mid-April, when the adult eclosion is sprayed and prevented. With 1.8% cadmium 15 ml + 4.5% beta cypermethrin 35 ml + 50 kg water.
(14) Tianniu
Symptoms: The calf larvae grazing in the trunk, generally do not drill to the trunk more than 1 meter, into the xylem of the tree, affecting the tree's moisture and nutrient delivery, resulting in debilitating tree vigor.
Drug control:
Prescription I: December - In February of the following year, spray 40% chlorpyrifos 500ml + 50kg water, or 50% exclusive 500ml + 50kg water in the trunk of the tree.
Prescription 2: Look for wormholes on damaged branches with insects and excrement, and use cotton to dip 40% of the speed to extinguish anti-50 ml + 5 kg of water and seal it with soil.
Prescription 3: Adults appear after 6 months, during the peak period of adults, anti-100 ml + 50 kg water is sterilized with 40% speed, or 40% chlorpyrifos 160 ml + 50 kg water, or 5% Ruijinte suspension 20-25 ml + The 50 kg water solution is sprayed on the branches.
(15)
Symptoms: The adult sucks the sap from the shoots, and uses the ovipositor to insert the annual xylem into the annual or former branch of the shoot to form a “claw†shaped egg nest. Small wounds are seen from the outside and the transmission of nutrients is destroyed. The upper part of the lethal shoots gradually becomes dry. The nymphs suck the root juice.
Drug control:
One prescription: killing 2-3 kilograms per acre with 3% ground worms, and simultaneously treat other underground pests such as golden worms, nematodes, cockroaches, etc.;
Prescription 2: Orchard with high density of worms, and the age of adults, spray 20% of fenpropathrin EC in the morning with 35 ml + 50 kg of water, or 2.5% Riesling 25-35 ml + 50 kg of water.
(16) Freezing damage
Symptoms: When the temperature is 0°C, young leaves and seedlings are subjected to freezing injury. When the temperature reaches -1.5°C, the old mature leaves are also subjected to freezing injury. At -2°C, when the branches are damaged, the -3°C continues for 3 hours for more than 2 days and 2-3 years. Withered to death.
Control methods: strengthen cultivation and management, increase organic fertilizer, control the winter, and do a good job of covering the trees, whitening the trunk, etc.; when the cold wave comes, arrange a fumigation pyrotechnic for every 100 square meters (mixed with rough or wood chips) Waste oil). At 24 o'clock in the evening, the temperature at 0 o C will ignite smoke. The next morning, the tree crowns were sprayed with water to wash the water; the damage was light, and the ground was quickly used after the cold wave. The tree crowns were sprayed with green leaves, green leaves, baby and cytokinin to restore growth.
(17) Crackers
Symptoms: It is a physiological disease. In most cases, the pericarp has longitudinal cracks and horizontal cracks. Since the cracked fruit is exposed, it is easy to infect some saprophytic bacteria or fungi, causing the pulp to spoil and rot. There are three periods of relative concentration in litchi fruit cracking: the first young fruit period pericarp and seed growing period, about 25-30 days after female flower replenishment; the second time female flower cultivating about 50 days, the pulp enters the long vertical period: third The second time is 65-70 days after the female flower, that is, the flesh horizontally fierce. Litchi is prone to cracking during the rapid growth period after the pulp is full of seeds and during the meat enlargement period when the seeds mature. Glutinous rice bran is the most easily cracked fruit, Guizhi, Huaizhi also appear cracked fruit, while Zizixiao is more serious in the young fruit period.
Control methods: Keep water supply uniform during growth and development. Drought and high temperature sprayed water on the canopy and drained when rain accumulated. Especially in the early stage of fruit growth and development, in the event of long drought, the soil should be filled with water and water should be sprayed on the young fruit of the crown. In the later period of fruit development, root cutting and ring cutting are used to reduce the transport of water to the fruit to reduce cracking. Do a good job of pest control work, especially the prevention and treatment of anthrax and aphid fever, to reduce cracks caused by pests and diseases.
Drug control:
Formula one: 15 days after full flowering, it begins to be sprayed with 30 grams of green tea, 60 ml of turquoise, and 45 ml of water + 50 kg of water. After 10-15 days, it will be sprayed once more. Ml + 50 kg water.
Prescription 2: In the middle and later stages of fruit development spray force 30 ml + calcium calcium 60 ml + 50 kg water, spray once every 10-15 days, even spray 2-3 times, this can enhance peel toughness, can achieve better Preventive effect.
(18) Invalid flowering or flowering
1, it rains, resulting in silk flowers.
Prescription I: Shake the tree after the rain and use a bamboo pole to tie the big iron hooks. Each tree shakes and the rain drops off.
Prescription II: Before the rain, Fuyou Spirit 160 ml + 50 kg of water is sprayed. Fuyou Ling is a kind of microcrystalline wax. After spraying, it is equivalent to applying a layer of breathable and porous precision wax film to the fruit trees. The rain is easy to slide off and is not easy to produce. flower.
2. High temperatures are encountered during flowering, resulting in burnt flowers. When the temperature is higher than 28°C, pollen sprouts poorly.
Prescription I: spray water cooling;
Prescription 2: Spraying Fuyou Ling 160 ml + 50 kg of water can reduce the loss of stamen water, balance the nectar concentration and reduce the inflorescence temperature. It can generally be lowered by 2°C.
3, when the flowering encounter "cold spring". When the “cold winter†wind blows the north wind, the style of litchi is easy to dry and the nectar is too thick. When the temperature is too low (below 16°C), the pollen germination is inhibited.
Prescription I: Spray Fuling Ling 160 ml + 50 kg water. Increases the inflorescence temperature by 2°C.
4. When there is no insect spreading pollen, there are few or no results.
The main method: artificial bees;
Artificial pollination. The method of artificial pollination uses bamboo baskets to tie yarns or twine, soaked with water and wrung out to form a duster. Then, in the male flowering tree, shake the pollen and soak the pollen in the bucket. Repeat this several times. When the pollen water is light yellow, 50 kg of pollen water plus 30 ml of force pass + 50 ml of greenish blue + 500 g Glucose is then sprayed on the open flower spikes of female flowers. This process takes a short time, and the time is as short as possible within 15 minutes.
5, the main method to cultivate robust spikes is sparse flower buds.
Main technique: Short main inflorescences. When the inflorescence is about 5-10 cm long, the petal reveals inflorescence 2/3-3/5. Immediately after harvesting the flower spikes, spray 70% Anric 60g + Greengreen 60ml + 50kg water. This will provide nutrients and prevent bacteria from invading the wound.
(19) Falling fruit
1. Decrease the second physiological fruit drop: Generally, 25 days after litchi blooms, the lychee flower turns to fruit and endogenous hormones are deregulated. The work at this time is to thank the 15 days after flowering to supplement the exogenous hormones.
Prescription I: Spray 8% Dang An 30g + Green Green 60ml + 50kg water.
Prescription 2: Spray 20% "Qibao 920" 1g + Green Green 60ml + 50kg water.
2. The third physiological fruit drop: This period was mainly due to the rapid growth of litchi fruit and insufficient supply of organic nutrients.
Control methods: The results of a long shoot shoots will use bamboo shoots to fight vegetative shoots or to prosper long tree branches for minor ring cuts, and to apply long-lasting organic fertilizers at the flowering stage. There are mainly large biological organic fertilizers, duck hair, chicken manure, mushroom soil and so on. If the organic fertilizer is added with humic acid, fulvic acid, a more powerful effect.
Prescription: Spray organic fertilizer after blooming, the effect of organic nutrition are: glucose, amino acids, rare earth amino acids, green blue, fulvic acid, calcium calcium, fast abundance, etc., should be sprayed before 10:00 in the morning.
(20) Post-harvest management
1, heavy fertilizer, mainly nitrogen fertilizer, phosphorus and potassium fertilizer shop, promote litchi pomelo once to secondary autumn shoots, and promote aging.
2, ring cut, in October to strengthen the reproductive growth potential of young trees. Specific methods: deep excavation method, remove some fibrous roots; ring cutting trunk method, based on helical ring cutting, according to the age of the need to adjust the pitch; spiral ring stripping, ring width to 2-4 mm appropriate, screw angle to 19 Degree is appropriate, the number of laps is preferably 1.5-2.5 laps.
3, chemical control tip, with the killing hormone 25 ml + 15% paclobutrazol 40-50 g + force through 50 ml + oil 40 ml + 50 kg water, or ethephon 25-40 ml + paclobutrazol 150-200 g + 50 kg Water is sprayed so that sprouting of leaf buds can be suppressed, flower bud differentiation can be enhanced, and female flower ratio can be increased.
4, spray surface fertilizer, with complex amino acids 60 ml +50 kg of water, or green blue 60 ml +50 kg water spray, enhance the tree's organic nutrient accumulation, lay a good material foundation for the flowering results.
Second, longan pest control
(a) Root rot
Symptoms: The cortex below 10 cm from the ground is soft, necrotic, and rot. Yellowish-white to brownish at the beginning, black afterwards, rotted roots, wilted plants, fallen leaves and withered. When the humidity is high, the surface of the diseased part has a lot of white frosty mildew.
Drug control:
Prescription I: Apply 25% metalaxyl 500g + 50kg water, or 70% Anric 500g + 50kg water to coat the roots, apply once every 10-15 days for 2-3 times. The wounds are healed and covered with river sand or new soil.
Prescription II: Use 70% of Anric 60g + 50kg of water, or 77% of copper 100g + 50kg of water to make up the liquid.
(b) Anthrax
Symptoms: The leaf blade victim starts from the leaf tip or leaf margin and rapidly expands toward the leaf base, showing a scald, round or irregular lesion, showing a distinct or inconspicuous moire. The top of the diseased tip appeared wilting and then withered, the diseased part was dark brown, and the whole shoot was withered later. Flowering branches are damaged and their ears are browned, resulting in falling flowers. Onset of young fruit, first small yellow-brown spots, followed by dark brown, water-like. In the near-mature or mature stage, the disease is mainly in the pedicles of the fruit. The lesions are round, brown and brown on the edges. There are orange sticky granules in the center and the pulp tastes corrupt.
Control methods: Deeply plough the soil, increase the application of organic fertilizer and phosphorus and potash fertilizer, implement formula top-dressing, avoid partial nitrogen fertilizer, combine pruning in the winter, cut away diseased leaves, remove defoliants on the ground, and burn them centrally to reduce the bacteria source. The young shoots of the new shoots have been developed but not yet green, buds, and young fruit 5 to 10 mm in size; medication for heavy orchard production in the past years, should be sprayed 2 or 3 times in flower buds and young fruit stages. . In April and May, the combination of pest control and mixed spraying can receive the effect of preventing and controlling pests.
Drug control:
Prescription I: 43% Dashengfu 100 ml + 100 grams of urea + 50 kilograms of water, spraying.
Prescription II: 25% Prochloraz 30 ml + 50 kg water, or 25% Epiphyllum 12.5 ml + 50 kg water, or 1.5% bacteria off 40 ml / 50 kg water spray, the above three agents are used interchangeably.
(c) Acid rot
Symptoms: The fruits that are harmful to ripening start from the beginning of the fruit pedicle, brownish at the beginning, and then extend to the whole fruit, causing the peel to turn brown and rot, and the flesh rot and sour. When wet, the diseased part has fine powdery white mold.
Control methods: to strengthen the cultivation and management, pay attention to the prevention and treatment of litchi, elephant lice, locust worms, harvesting and storage and transportation to minimize fruit damage; clearing the ground in winter when the drop of fruit, reduce the source of the disease.
Drug control:
Prescription I: Spray 25% Prochloraz 25 ml + Fortune 250 ml + 50 kg water solution before harvesting fruit.
Prescription 2: Take effect of the practical 25% of the fresh-keeping grams of 30 ml +2,4-D5 grams + blessing spirit 1 kg plus 50 kg of water dipping fruit 1-2 minutes.
(d) Leaf spot
Symptoms: gray spots: lesions from the tip of the leaf to the leaf edge expansion, round to oval, auburn, after the synthesis of irregular large lesions, turned gray, the size of the needle can be seen on the black spots.
Bai Xingxing: Small, round, brownish-leafed lesions on leaves, enlarged to grayish white, brown on margin, with several black, small, granular spots. The disease is brown on the back, the edges are not obvious, and there are sometimes yellow halos around.
Brown spot type: round or irregular brown spot, enlarged central grayish brown, brownish brown. The back of the leaf is hazel, with dark spots on the upper part. The lesions synthesize large lesions that spread to the leaf base and cause defoliation.
Control methods: Increase the use of organic fertilizers, remove water from the orchard in a timely manner, renew pruning and sensational orchards, grasp the clean gardens, remove litter, concentrate burn, and prevent and control various insect pests. For an orchard with history of onset, summer and autumn should be checked frequently and if there is any disease, timely spraying and prevention.
Drug control:
Prescription I: 77% of copper, 90 grams + 50 kilograms of water, spraying;
Prescription 2 : 25% Epiphyllum 12.5 ml + 50 kg water, spraying;
Prescription 3: 25% Prochloraz 20ml + 50% anthrax covered with 30g + 50kg water, spraying.
(v) Algae spot disease
Symptoms: There are gray-green lesions on the leaves or on the old leaves. They turn into purple-brown afterwards. They are nearly round and have irregular edges. They have orange-brown velvet and turn dark brown.
Control methods: Increase the organic fertilizer, eliminate water in time, and reasonably trim. After the clear garden and early onset of medication control.
Drug control:
Prescription I: 77% of Guanyin copper 1 package 90 grams of water plus 50 kilograms of liquid preparation, spray;
Prescription 2 : 30% green decoction 100 ml + 50 kg water, spraying;
Prescription 3: 25% Prochloraz 30 ml + 50 kg water, spraying.
(6) Coal smoke
Symptoms: Dark brownish mildewed leaves at the beginning of the leaves, followed by a velvety layer of black mold. In severe cases, the whole leaves are covered with black mold.
Control methods: Properly pruning, strengthen fertilizer and water management, and timely control of scale insects such as scale insects, whiteflies and roundworms.
Drug control:
Prescription I: 20% killer 50 ml + 25% chlorophylla 13 ml + 50 kg water, spraying;
Prescription II: 40% Zhen Li 35 ml + 25% Prochloraz 35 ml + 50 kg water, spray.
(7) Ghost disease
Symptoms: When young shoots are damaged, the young leaves become small, curved, light green or yellow-green and cannot be unfolded, or have a distorted, mottled mosaic; petiole broadens, and some become banded deformed leaves. In severe cases, the new shoots are shortened and clustered, showing a broom-like shape, and young leaves fall off into bald branches. Spikes are affected, internodes are shortened, clusters are clustered in flower spikes, and flowers are deformed, densely integrated into the ball, easily falling off, and not as strong. Harmful shoots and spikes of litchi and longan.
Control methods: Quarantine is banned, seedlings, scions and diseased seeds are prohibited from wards; disease-free seedlings are cultivated. Seed-bearing rootstocks were cultivated from the disease-free parent trees, scion was taken from the disease-free, high-quality and strong mother plants, and grafted seedlings were planted; the pest control was strengthened. The shoots were sprayed to prevent litchi and wood lice.
Drug control:
Prescription I: 50 kg of water plus 1.5% powerful virus Wei 35 ml + 3% insects that is grams of 20 ml + Green Green 60 ml, spraying;
Prescription two: 50 kg of water plus 3.95% of the virus will be 60 grams of +10% imidacloprid 1 two + green leaf baby 35 ml, spraying.
(8) Lichens and mosses
Symptoms: The gray-gray or gray-green lichen tissue attaches to the branches of the tree. The moss attaches to the branches and leaves of the tree with pale green or green moss roots. Both absorb the water and nutrients of the tree, affecting the normal growth of the plant and weakening the tree vigor.
Drug control:
Prescription I: For severely affected orchards, after clearing the garden in winter, the main stem and the thicker branches of fruit trees can be brushed with 10%-15% lime emulsion;
Prescription 2: After fruit picking, use 45% Dysonam ammonium 200 ml + 50 kg water to spray on the trunk.
Prescription 3: In combination with the winter garden, use 30% sorghum 100 ml + alkali 1-2 kg spray.
(9) Angular Cheeks
Symptoms: adults in the young shoots, buds, leaves on the feeding hazards, nymphs fixed on the back of the blade and the formation of the back of the abdomen, foliar worms raised, so that the leaves appear a spike-like protrusion, blade distortion, severe change Yellow falling early, affecting the normal growth of the leaf, this worm is also a long-distance poisonous prion disease transmission medium.
Control methods: Strengthen the management of fertilizers and waters, make the shoots long and neat, grow green and fast, and reduce harm.
Drug control:
Prescription I: 40% chlorpyrifos 50 ml + 50 kg water, spraying;
Prescription 2: 10% imidacloprid 30 ml + 50 kg water, spraying;
Prescription 3: 20% acetamiprid 12.5 ml + 50 kg water spray. Pay attention to the fact that the spray should be sprayed once when the sprouts grow about 5 centimeters and sprayed once every 7 days.
(ten) Longan Chicken
Symptoms: Nymphs and adults suck the juice from the trunk or shoots. When they are severe, they can weaken, dry up, and cause fruit drop. The excrement can also cause soot.
Control methods: artificial catching before wintering adults lay eggs, during the spawning period, combined with pruning or sparse roots, cutting off or scraping off the egg masses, nymphs sweeping away and destroying nymphs.
Drug control:
Prescription I: 2.5% Riesling 25 ml + 50 kg water, spraying;
Prescription 2: 20% fenpropathrin EC 30-50 ml + 50 kg water, spraying;
Prescription 3: 40% chlorpyrifos EC 30 ml + 50 kg water, spraying.
Pay attention to spraying control in young nymphs.
(11) Longan
Symptoms: Chengyu, Ruoqiang in the flowering spikes and freshly sprouted unleavened young leaves piercing sap, resulting in shortening between flower spikes, buds can not be normally open, become swollen flowers, long time does not fall off. The tender shoots were shortened between internodes, with branches spreading, and young leaves bowing.
Control methods: The densely planted orchards must be willing to cut down trees, so that the orchard planting density is reasonable, air and light. The shading of the internal litchi, pendulous branches or dense branches should be cut off in time. Once you find a damaged shoot, cut it off immediately and burn it. In the new shoot compound leaf growth period to the beginning of see 2- 3 red leaves and new shoots fully developed when the green turn to use the agent control.
Drug control:
Prescription 1: 15% broom net emulsion 30 ml + 50% sulfur suspension 80 ml + 50 kg water, spraying;
Prescription II: 1.8% Mothing 25 ml + 50 kg water, spray;
Prescription 3: 20% fenpropathrin 30 ml + 50 kg water, spraying.
(12) Turtle Longhorn
Symptoms: The larvae feed on the trunk and branches, first feed under the cortex, and then enter the xylem to form a flat-shaped tunnel. At a certain distance, they bite a small hole to ventilate and excrete excrement and affect the transport of water and nutrients. Causes the tree vigor to weaken and severe branches are empty. Adults bite the branch of the cortex that year, causing the shoots to dry.
Control methods: From July to August in the period of adult emergence, shake the branches, and the adult insects fall to the ground to collect and eliminate. Cut off the dead branches after being killed, together with the larvae burning them up. Or found a half-moon spawning bark on the bark, hammering the victim with a hammer and killing the eggs or larvae under the bark.
Drug control:
Prescription I: After the larvae enter the xylem, 1-2 holes in the upper part of the larvae bite the upper part of the latest orifice irrigation 40% anti- 40 ml + 5 kg water, or 80% dichlorvos 50 ml -100 ml + 5 kg water, Then block the orifice;
Prescription 2: Insult the antibiotic with a cotton ball and insert it into the fistula from the defecation hole, and then use a clay to block the orifice.
Prescription 3: Adults appear after 6 months, during the peak period of adults, anti-100 ml + 50 kg water is sterilized with 40% speed, or 40% chlorpyrifos 160 ml + 50 kg water, or 5% Ruijinte suspension 20-25 ml + The 50 kg water solution is sprayed on the branches.
(thirteen) horses
Symptoms: The leaves of the victim's leaves are curled, some are corrugated, some are bent backwards, veins are yellowish-green, and yellow-fleshed spots or linear ridges appear on the leaves. After the leaves turn yellow, stiff, easy to fall off. The top bud victim shrank.
Control methods: Tips should be neat, control winter shoots, field reservations or planting of weeds and other weeds to protect the breeding of natural enemies. A serious orchard has occurred and the use of drugs for the prevention and treatment of young nymphs at their peak is under control.
Drug control:
Prescription I: 3% worms are grams of 17 grams + 20% Green Spirit 25 ml + 50 kg of water dubbed liquid spray;
Prescription II: 10% imidacloprid 25 g + 50 kg water spray;
Prescription 3: Security 30 g + 50 kg water, spraying.
(14) Leaf roller moth
Symptoms: The larvae droop the young leaves into a cylindrical shape. There are also 3-5 leaf slivers that hide the hazards. Garnish the flower spikes when harming the flower. Larvae feed on them. Also fall into the nuclear hazard.
Control methods: Grasp the clean garden work, remove the weeds, cut off the victim's shoots, remove the egg masses, seduce the adult insects with black light, and measure and report before and after the full bloom, to master the control of larvae spraying during the incubation period.
Drug control:
Prescription I: 1.8% Ke Mo Ding 12.5 ml + 4.5% beta cypermethrin 25 ml + 50 kg water, spraying;
Prescription 2: 40% chlorpyrifos 50 ml + 10% cypermethrin 25 ml + 50 kg water, spray.
(15) Small gray butterfly
Symptoms: The larvae feed on the nucleus, the boring hole is nearly round, the peripheries are smooth, the wormholes are not attached to the wormholes, and the orifices face downward, and the damaged fruits do not fall off after drying.
Control methods: removal of fruit, hook bark crack insects. Master egg incubation period, combined with the prevention and treatment of locust aphid in a timely manner.
Drug control:
One prescription: Spray 90% trichlorfon crystals 1 plus 50 kilograms of water 10 days after flowering, and then spray 1 time with 10% cypermethrin 25 ml plus 50 kilograms of water every 15 days.
Prescription II: 1.8% Ke Mo Ding 12.5 ml + 4.5% beta cypermethrin 25 ml + 50 kg of water into liquid spray.
(Sixteenth)
Symptoms: During the young fruit period, the larvae feed on the cortex of the fruit nucleus, resulting in fruit drop, fruit coloring period, damage, seed nucleus hard, larvae only harm the fruit pedicle, leaving worms, seriously affecting the yield, post-harvest larvae drilled tender or new leaves The damage of the midrib will cause the veins of the leaves to become brown, and the tunnel is filled with insect feces, which affects the normal growth of shoots.
Control methods: timely pruning after fruit picking, cutting off dense shoots to make the park airy and clear; timely put autumn shoots to reduce hazards; young fruit should be collected in time to focus on the burning down, reduce the early insect source; control winter shoots, Disrupt their food sources, reduce overwintering insect sources; timely spraying control, the key is to pay attention to forecast, can spray 1-2 times in the small fruit hook, 20-22 days and 10-12 days before the longan maturity of the spray 1 time, if it is best to delay the harvest of orchards plus one spray.
Drug control:
Prescription I: 30% Peach Xiaoling 35ml + 18% of insecticidal double water agent 100ml + 20% dead insect net 50g + 50kg water, spraying;
Prescription II: 2.5% Riesling 35 ml + 25% diflubenzuron 50 ml + 40% speed anti-50 ml + 50 kg water spray;
Prescription 3: 1.8% cadmium 25 ml + 4.5% beta-cypermethrin 25 ml + 50 kg water, spraying.
(17) Dodder
Symptoms: The branches are entangled with dodder, which can lead to scars, poor growth, or cover the crown, causing the leaves to fall off yellow, the branch shoots dry, the tree vigor is weak, and even the whole plant withers. Dodder seed propagates by seed, grows and encounters the host and wraps around. When the sucker reaches into the host, it absorbs nutrients and moisture from the host. The flowering results in late summer, after the seeds matured and wintered.
Control methods: Dodder seeds were buried deep before cultivating without germination. The orchard that has occurred has been cut off along with the host victim.
"Farmers Get Rich Pocket Series"
(A) Phytophthora capsici
Symptoms: The victim suffers from irregular brown to dark brown spots from the fruit pedicle. A few days later, the lesions spread. In the wet weather, a layer of white mold grows. The flesh of the fruit is sour, the peel is flaky, brown juice is found. Outflow. The head of a flower blooms brown and decays, and the diseased part produces white mold. The disease also harms pedicel, resulting twigs and leaves.
Control methods: reduce orchard humidity. To build a new orchard, choose a site with loose soil, well-drained and sunny areas. For the current results park, pay attention to cultivating soil, increasing organic fertilizer, improving the structure of garden soil, and digging trenches for cultivation, which will facilitate drainage, reduce humidity, and reduce incidence. Pruning and cleaning orchards. After harvesting the fruit, cut off the branches, branches and weak branches of the canopy to remove the diseased fruit and rotten fruit. Spray protection, in the orchard with severe disease, spray once in bud stage, young fruit stage and fruit near maturity stage. Orchards are generally used once in the fruit's near maturity and maturity. Pay attention to the weather conditions and take the spray protection.
Drug control:
Prescription I: Spraying with 43% of raw material and 500 times of liquid;
Prescription II: 72.2% Polik liquid 800 times, spraying;
Prescription 3: Use 70% Anric 800 times, spray;
Prescription 4: Spray with 25% metalaxyl 1000 times.
(b) Lychee anthracnose
Symptoms: The leaf blade victim starts from the leaf tip or leaf margin and rapidly expands toward the leaf base. It is scalded, round or irregular, showing obvious or inconspicuous moire, with obvious disease and health, and young leaves. The top is wilting, and it dies after it. The top of the diseased tip appeared wilting and then withered, the diseased part was dark brown, and the whole shoot was withered later. Flowering branches are damaged and their ears are browned, resulting in falling flowers. Onset of young fruit, first small yellow-brown spots, followed by dark brown, water-like. Fruit in the near-mature or mature stage of disease mainly in the fruit pedicle, lesions are round, brown, brown edge, the middle orange sticky small particles appear, the taste and corruption of pulp.
Control methods: to strengthen the cultivation and management. Adhere to the normal cultivation and management work, pay attention to plough the soil, increase the application of organic fertilizer and phosphorus and potassium fertilizers, implement formula fertilizer, avoid partial nitrogen fertilizer, in order to enhance tree vigor and improve disease resistance. Clean the orchard. Combined with pruning in the winter, the leaves of the diseased leaves are cut off, the leaves of the ground are removed, and burned to reduce the source of bacteria. The young shoots of the new shoots have been developed but not yet green, buds, and young fruit 5 to 10 mm in size; medication for heavy orchard production in the past years, should be sprayed 2 or 3 times in flower buds and young fruit stages. .
Drug control:
One prescription: 43% of Dashengfu 500 times liquid + 0.2% urea, spraying;
Prescription 2: 25% chlorpromazine 1500 times, spraying;
Prescription 3: 25% chlorophyll 4000 times, spraying;
Prescription 4: 50% rich star 1500 times, spraying;
Prescription 5: 1.5% bacteria eradicate 1200 times liquid spraying, in the 4 to 5 months, combined with pest control mixed spraying, can receive the effect of disease prevention and pest control.
(c) Litchi ghost disease
Symptoms: When young shoots are damaged, the young leaves become small, curved, light green or yellow-green and cannot be unfolded, or have a distorted, mottled mosaic; petiole broadens, and some become banded deformed leaves. In severe cases, the new shoots are shortened and clustered, showing a broom-like shape, and young leaves fall off into bald branches. Spikes are affected, internodes are shortened, clusters are clustered in flower spikes, and flowers are deformed, densely integrated into the ball, easily falling off, and not as strong. Harmful shoots and spikes of litchi and longan.
Control methods: Quarantine is banned, seedlings, scions and diseased seeds are prohibited from wards; disease-free seedlings are cultivated. Seed-bearing rootstocks were cultivated from the disease-free parent trees, scion was taken from the disease-free, high-quality and strong mother plants, and grafted seedlings were planted; the pest control was strengthened. The shoots were sprayed to prevent litchi and wood lice.
Drug control: spraying 1.5% of powerful virus Weihui emulsion 1000-1500 times, 3.95% of virus will be 800 times and other drugs.
(four) ulcer disease
Symptoms: Also called rough skin disease. The stems of the poles lose their luster, gradually shrinking, rough cracking, protruding nodules, serious xylem brown, the above sticks dead, leaves fall off, the whole tree vigor decline. There are many wounds, many pests, and bacteria are easy to spread when it is hot and humid.
Control methods: Minimize the wound during cultivation, cut the shady canopy, cut off or short-cut large branches, and burn concentrated, strengthen the management of fertilizer and water, fertilize loose soil and apply fertilizer outside the root, so that the tree vigor gradually recovers.
Drug control:
Prescription I: Onset of the trunk or main branch, including the removal of the disease department in time, and then using 72% of the epidemic net 0.5 two + 75% chlorothalonil 0.5 two against 5 kg of water or 80% of the necessary 1 two against 5 kg of water or 70% Anric 1 and two pairs of 5 kg of water dubbed liquid, coated once every two weeks, use these three formulations for rotation, and even more than three times until the symptoms disappear.
Prescription II: When the collaterals become infected, spray the 0.2-0.3 Baume of lime sulfur or 70% of Anric 1 and 100 kg of water to protect the new branches from harm.
(E) Acid rot
Symptoms: Harmful ripe fruit, starting from the fruit pedicle, brown at first, then expanded to full fruit, turning the peel into brown, the pulp rot and sour. When wet, the diseased part has fine powdery white mold.
Control methods: to strengthen the cultivation and management, pay attention to the prevention and treatment of litchi, elephant lice, locust worms, harvesting and storage and transportation to minimize fruit damage; clearing the ground in winter when the drop of fruit, reduce the source of the disease.
Drug control:
Prescription I: 50 kg of water plus 25% of prochloraz 25 g + 100 grams of Fuyou Ling formulated liquid before spraying.
Prescription II: dip medicine protection. Postharvest lychee fruit with 50 kilograms of water plus 25% fresh-keeping grams 35 grams + 2,4-D5 grams + Fuling Ling 0.5 kg dipping fruit 1-2 minutes.
(6) Leaf spot
Symptoms: gray spots, lesions from the tip of the leaf to the edge of the expansion, round to oval, auburn, after the synthesis of irregular large lesions, turned gray, the size of the needle can be seen on the black spots.
The white star type, with a small brownish brown spot on the leaf surface, turns grayish after expansion, has a brown edge, and has several small black dots on it. The lesions on the back are gray-brown and their edges are not obvious. There are sometimes yellow halos around them.
Brown spot type, round or irregular brown spots, enlarged central grayish brownish brown, brown edges. The back of the leaf is hazel, with dark spots on the upper part. The lesions synthesize large lesions that spread to the leaf base and cause defoliation.
Control methods: Increase the use of organic fertilizers, remove water from the orchard in a timely manner, renew pruning and sensational orchards, grasp the clean gardens, remove litter, concentrate burn, and prevent and control various insect pests. For orchards with history of onset, they should be checked frequently in summer and autumn, and if there are any diseases, they should be sprayed and prevented in time.
Drug control:
Prescription I: 77% of copper, 90 grams + 50 kg of water, spraying.
Prescription 2 : 25% Epiphylla 13 ml + 50 kg water sprayed.
Prescription 3: 25% chloramphenicol 30 ml + 50% anthrax covered with 30 g + 50 kg water, spraying.
(7) Algae spot disease
Symptoms: There are gray-green lesions on the leaves or on the old leaves. They turn into purple-brown afterwards. They are nearly round and have irregular edges. They have orange-brown velvet and turn dark brown.
Control methods: Increase the organic fertilizer, eliminate water in time, and reasonably trim. After the clear garden and early onset of medication control.
Drug control:
Prescription I: 50 kg of water plus 77% of copper 90 grams of liquid preparation spray;
Two prescriptions: 50 kg of water plus 30% of green decoction 100 ml of liquid spray.
(8) Coal smoke
Symptoms: Dark brown moldy leaves appear at the beginning of the leaves, followed by a velvety layer of black mold. In severe cases, the whole leaves are covered with black mold.
Control methods: Properly pruning, strengthen fertilizer and water management, and timely control of scale insects such as scale insects, whiteflies and roundworms.
Drug control:
Prescription I: 50 kg of water + 20% killer 50 ml + 25% chlorophyll 13 ml, spraying.
Two prescriptions: 50 kg of water + 40% of Zhen Zhu Li 35 ml + 25% Prochloraz 35 ml, spraying.
(9) Duck head green
Symptoms: Near fruit to dark green near the fruit shoulder, black dots distributed fruit surface, affecting the commercial value of litchi.
Prevention methods: old trees retract and update, sparse dense branches, and sprays to prevent warts.
Drug control:
Prescription I: 50 kg water plus 15% broom net 35 ml + 60 ml green turquoise, spraying;
Two prescriptions: 50 kg of water plus 1.8% of cadmium 25 ml + green blue 60 ml, spraying.
(10) Litchi
Symptoms: commonly known as stink bug, urine cabinet. Adults, nymphs sucking young shoots, tender shoots, affect normal growth, severe shoot shoots. In the stalks and young fruit stalk sucking juice caused by falling, falling fruit, in the frightened will discharge odor, sucking leaves, spikes and young fruit will cause brown spots, the damage caused by the damage is conducive to downy mildew The invasion of pathogens causes downy mildew, and serious hazards can lead to yield loss or even loss.
Control methods: manual killing, using the characteristics of false death of litchi pods and low temperature activity below 10°C in winter, shaking the branches vigorously, so that the adults fall to the ground to eliminate and eliminate. May spawning period, manual removal of egg masses. The use of flat-bellied bees to control the tree more than 30 years old, tall tree crown, difficult to spray control of the tree, the effect is particularly good.
Drug control:
Prescription I: The resistance to overwintering adults is low. Before mid-March, when female adults are not spawned, 90% trichlorfon crystals 65 g and +18% double 100 ml + 50 kg water can be sprayed.
Prescription II: After the egg incubation period of April to May and the 3rd instar of nymphs, 2.5 ml of Riesling or 35 ml of 30% Peachin 35 ml or 10% beta-cypermethrin 35 ml and 50 kg of water are sprayed. The above three agents are used interchangeably. .
(11) Tillers
Symptoms: During the young fruit period, the larvae feed on the cortex of the fruit nucleus, resulting in fruit drop, fruit coloring period, damage, seed nucleus hard, larvae only harm the fruit pedicle, leaving worms, seriously affecting the yield, post-harvest larvae drilled tender or new leaves The damage of the midrib causes the veins of the leaves to become brown, and the tunnel is filled with insect feces, which affects the normal growth of shoots.
Control methods: timely pruning after fruit picking, cutting off dense shoots to make the park airy and clear; timely put autumn shoots to reduce hazards; young fruit should be collected in time to focus on the burning down, reduce the early insect source; control winter shoots, The source of food is interrupted and the source of overwintering insects is reduced. The key to timely control of spraying is to pay attention to forecasting and forecasting. It can be sprayed 1-2 times when the fruit is hooked, and sprayed 20-22 days and 10-12 days before the ripening of litchi. 1 time, if it is best to delay the harvest of orchards plus one spray.
Drug control:
Prescription I: 30% peach Xiaoling 35 ml +18% insecticidal double water agent 100 ml + dead insect net 50 g + 50 kg water, spraying.
Prescription II: 2.5% Riesling 35 ml + 25% diflubenzuron 50 ml + 40% speed anti-50 ml + 50 kg water, spraying.
Prescription 3: 1.8% cadmium 25 ml + 4.5% high efficiency cypermethrin 25 ml + 50 kg water, spraying.
(twelve) 瘿螨
Symptoms: Chengyu, Ruoqiang harm the tender buds, leaves, spikes and young fruit, sucking juice, leaves damaged parts, the shape of "felt", the victim blade depression, convex leaves, resulting in distortion of the leaf surface, damage flower spike The flower expands into a puffy ball, which does not bloom, and the young fruit is easily shed.
Control methods: post-harvesting pruning, cutting off pests and branches and dense branches, concentrated burning, reduce the source of insects; strict control of winter shoots, reduce the population density.
Drug control:
Prescription 1: After clearing the garden, spray 30% sorghum 60 ml + 50 kg water, or 0.3-0.5 Baume degree lime sulfur 1-2 times, or 50% sulfur suspension 150 ml + 50 kg water.
Prescription II: spray control after litchi germination until the felt-like grayish white, 50 kg of water plus 1.8% of mothite 25 ml, or 2.5% of Riesling EC 35-50 ml, or 20% of fenpropathrin EC 35-50 Ml, or 40% chlorpyrifos cream 35 ml, the above four agents are used interchangeably, and can also treat other pests.
(13) Small teapots
Symptoms: Adults and nymphs are harmed on branches that grow weaker and weaker. The damaged branches form annular tunnels that impede the transport of water and nutrients and affect normal growth. Severe branches die. In the event of a strong typhoon, it is easily broken at the trunk road. It also affects the quality of the fruit, the fruit is small and deformed, the flesh is thin and tasteless.
Control methods: Strengthen fertilizer and water management and increase tree vigor. After harvesting the litchi, pruning the pests and burning them centrally.
Drug control:
Prescription I: 50kg water + 40% chlorpyrifos 50ml, or 50kg water + 40% fast anti-emulsion 50ml, or 50kg water + 1.8% kerattin 25ml + oil emulsion 250ml spray to kill scattered out Adults. Note: The above three formulas should be used interchangeably.
Prescription II: In late February and mid-April, when the adult eclosion is sprayed and prevented. With 1.8% cadmium 15 ml + 4.5% beta cypermethrin 35 ml + 50 kg water.
(14) Tianniu
Symptoms: The calf larvae grazing in the trunk, generally do not drill to the trunk more than 1 meter, into the xylem of the tree, affecting the tree's moisture and nutrient delivery, resulting in debilitating tree vigor.
Drug control:
Prescription I: December - In February of the following year, spray 40% chlorpyrifos 500ml + 50kg water, or 50% exclusive 500ml + 50kg water in the trunk of the tree.
Prescription 2: Look for wormholes on damaged branches with insects and excrement, and use cotton to dip 40% of the speed to extinguish anti-50 ml + 5 kg of water and seal it with soil.
Prescription 3: Adults appear after 6 months, during the peak period of adults, anti-100 ml + 50 kg water is sterilized with 40% speed, or 40% chlorpyrifos 160 ml + 50 kg water, or 5% Ruijinte suspension 20-25 ml + The 50 kg water solution is sprayed on the branches.
(15)
Symptoms: The adult sucks the sap from the shoots, and uses the ovipositor to insert the annual xylem into the annual or former branch of the shoot to form a “claw†shaped egg nest. Small wounds are seen from the outside and the transmission of nutrients is destroyed. The upper part of the lethal shoots gradually becomes dry. The nymphs suck the root juice.
Drug control:
One prescription: killing 2-3 kilograms per acre with 3% ground worms, and simultaneously treat other underground pests such as golden worms, nematodes, cockroaches, etc.;
Prescription 2: Orchard with high density of worms, and the age of adults, spray 20% of fenpropathrin EC in the morning with 35 ml + 50 kg of water, or 2.5% Riesling 25-35 ml + 50 kg of water.
(16) Freezing damage
Symptoms: When the temperature is 0°C, young leaves and seedlings are subjected to freezing injury. When the temperature reaches -1.5°C, the old mature leaves are also subjected to freezing injury. At -2°C, when the branches are damaged, the -3°C continues for 3 hours for more than 2 days and 2-3 years. Withered to death.
Control methods: strengthen cultivation and management, increase organic fertilizer, control the winter, and do a good job of covering the trees, whitening the trunk, etc.; when the cold wave comes, arrange a fumigation pyrotechnic for every 100 square meters (mixed with rough or wood chips) Waste oil). At 24 o'clock in the evening, the temperature at 0 o C will ignite smoke. The next morning, the tree crowns were sprayed with water to wash the water; the damage was light, and the ground was quickly used after the cold wave. The tree crowns were sprayed with green leaves, green leaves, baby and cytokinin to restore growth.
(17) Crackers
Symptoms: It is a physiological disease. In most cases, the pericarp has longitudinal cracks and horizontal cracks. Since the cracked fruit is exposed, it is easy to infect some saprophytic bacteria or fungi, causing the pulp to spoil and rot. There are three periods of relative concentration in litchi fruit cracking: the first young fruit period pericarp and seed growing period, about 25-30 days after female flower replenishment; the second time female flower cultivating about 50 days, the pulp enters the long vertical period: third The second time is 65-70 days after the female flower, that is, the flesh horizontally fierce. Litchi is prone to cracking during the rapid growth period after the pulp is full of seeds and during the meat enlargement period when the seeds mature. Glutinous rice bran is the most easily cracked fruit, Guizhi, Huaizhi also appear cracked fruit, while Zizixiao is more serious in the young fruit period.
Control methods: Keep water supply uniform during growth and development. Drought and high temperature sprayed water on the canopy and drained when rain accumulated. Especially in the early stage of fruit growth and development, in the event of long drought, the soil should be filled with water and water should be sprayed on the young fruit of the crown. In the later period of fruit development, root cutting and ring cutting are used to reduce the transport of water to the fruit to reduce cracking. Do a good job of pest control work, especially the prevention and treatment of anthrax and aphid fever, to reduce cracks caused by pests and diseases.
Drug control:
Formula one: 15 days after full flowering, it begins to be sprayed with 30 grams of green tea, 60 ml of turquoise, and 45 ml of water + 50 kg of water. After 10-15 days, it will be sprayed once more. Ml + 50 kg water.
Prescription 2: In the middle and later stages of fruit development spray force 30 ml + calcium calcium 60 ml + 50 kg water, spray once every 10-15 days, even spray 2-3 times, this can enhance peel toughness, can achieve better Preventive effect.
(18) Invalid flowering or flowering
1, it rains, resulting in silk flowers.
Prescription I: Shake the tree after the rain and use a bamboo pole to tie the big iron hooks. Each tree shakes and the rain drops off.
Prescription II: Before the rain, Fuyou Spirit 160 ml + 50 kg of water is sprayed. Fuyou Ling is a kind of microcrystalline wax. After spraying, it is equivalent to applying a layer of breathable and porous precision wax film to the fruit trees. The rain is easy to slide off and is not easy to produce. flower.
2. High temperatures are encountered during flowering, resulting in burnt flowers. When the temperature is higher than 28°C, pollen sprouts poorly.
Prescription I: spray water cooling;
Prescription 2: Spraying Fuyou Ling 160 ml + 50 kg of water can reduce the loss of stamen water, balance the nectar concentration and reduce the inflorescence temperature. It can generally be lowered by 2°C.
3, when the flowering encounter "cold spring". When the “cold winter†wind blows the north wind, the style of litchi is easy to dry and the nectar is too thick. When the temperature is too low (below 16°C), the pollen germination is inhibited.
Prescription I: Spray Fuling Ling 160 ml + 50 kg water. Increases the inflorescence temperature by 2°C.
4. When there is no insect spreading pollen, there are few or no results.
The main method: artificial bees;
Artificial pollination. The method of artificial pollination uses bamboo baskets to tie yarns or twine, soaked with water and wrung out to form a duster. Then, in the male flowering tree, shake the pollen and soak the pollen in the bucket. Repeat this several times. When the pollen water is light yellow, 50 kg of pollen water plus 30 ml of force pass + 50 ml of greenish blue + 500 g Glucose is then sprayed on the open flower spikes of female flowers. This process takes a short time, and the time is as short as possible within 15 minutes.
5, the main method to cultivate robust spikes is sparse flower buds.
Main technique: Short main inflorescences. When the inflorescence is about 5-10 cm long, the petal reveals inflorescence 2/3-3/5. Immediately after harvesting the flower spikes, spray 70% Anric 60g + Greengreen 60ml + 50kg water. This will provide nutrients and prevent bacteria from invading the wound.
(19) Falling fruit
1. Decrease the second physiological fruit drop: Generally, 25 days after litchi blooms, the lychee flower turns to fruit and endogenous hormones are deregulated. The work at this time is to thank the 15 days after flowering to supplement the exogenous hormones.
Prescription I: Spray 8% Dang An 30g + Green Green 60ml + 50kg water.
Prescription 2: Spray 20% "Qibao 920" 1g + Green Green 60ml + 50kg water.
2. The third physiological fruit drop: This period was mainly due to the rapid growth of litchi fruit and insufficient supply of organic nutrients.
Control methods: The results of a long shoot shoots will use bamboo shoots to fight vegetative shoots or to prosper long tree branches for minor ring cuts, and to apply long-lasting organic fertilizers at the flowering stage. There are mainly large biological organic fertilizers, duck hair, chicken manure, mushroom soil and so on. If the organic fertilizer is added with humic acid, fulvic acid, a more powerful effect.
Prescription: Spray organic fertilizer after blooming, the effect of organic nutrition are: glucose, amino acids, rare earth amino acids, green blue, fulvic acid, calcium calcium, fast abundance, etc., should be sprayed before 10:00 in the morning.
(20) Post-harvest management
1, heavy fertilizer, mainly nitrogen fertilizer, phosphorus and potassium fertilizer shop, promote litchi pomelo once to secondary autumn shoots, and promote aging.
2, ring cut, in October to strengthen the reproductive growth potential of young trees. Specific methods: deep excavation method, remove some fibrous roots; ring cutting trunk method, based on helical ring cutting, according to the age of the need to adjust the pitch; spiral ring stripping, ring width to 2-4 mm appropriate, screw angle to 19 Degree is appropriate, the number of laps is preferably 1.5-2.5 laps.
3, chemical control tip, with the killing hormone 25 ml + 15% paclobutrazol 40-50 g + force through 50 ml + oil 40 ml + 50 kg water, or ethephon 25-40 ml + paclobutrazol 150-200 g + 50 kg Water is sprayed so that sprouting of leaf buds can be suppressed, flower bud differentiation can be enhanced, and female flower ratio can be increased.
4, spray surface fertilizer, with complex amino acids 60 ml +50 kg of water, or green blue 60 ml +50 kg water spray, enhance the tree's organic nutrient accumulation, lay a good material foundation for the flowering results.
Second, longan pest control
(a) Root rot
Symptoms: The cortex below 10 cm from the ground is soft, necrotic, and rot. Yellowish-white to brownish at the beginning, black afterwards, rotted roots, wilted plants, fallen leaves and withered. When the humidity is high, the surface of the diseased part has a lot of white frosty mildew.
Drug control:
Prescription I: Apply 25% metalaxyl 500g + 50kg water, or 70% Anric 500g + 50kg water to coat the roots, apply once every 10-15 days for 2-3 times. The wounds are healed and covered with river sand or new soil.
Prescription II: Use 70% of Anric 60g + 50kg of water, or 77% of copper 100g + 50kg of water to make up the liquid.
(b) Anthrax
Symptoms: The leaf blade victim starts from the leaf tip or leaf margin and rapidly expands toward the leaf base, showing a scald, round or irregular lesion, showing a distinct or inconspicuous moire. The top of the diseased tip appeared wilting and then withered, the diseased part was dark brown, and the whole shoot was withered later. Flowering branches are damaged and their ears are browned, resulting in falling flowers. Onset of young fruit, first small yellow-brown spots, followed by dark brown, water-like. In the near-mature or mature stage, the disease is mainly in the pedicles of the fruit. The lesions are round, brown and brown on the edges. There are orange sticky granules in the center and the pulp tastes corrupt.
Control methods: Deeply plough the soil, increase the application of organic fertilizer and phosphorus and potash fertilizer, implement formula top-dressing, avoid partial nitrogen fertilizer, combine pruning in the winter, cut away diseased leaves, remove defoliants on the ground, and burn them centrally to reduce the bacteria source. The young shoots of the new shoots have been developed but not yet green, buds, and young fruit 5 to 10 mm in size; medication for heavy orchard production in the past years, should be sprayed 2 or 3 times in flower buds and young fruit stages. . In April and May, the combination of pest control and mixed spraying can receive the effect of preventing and controlling pests.
Drug control:
Prescription I: 43% Dashengfu 100 ml + 100 grams of urea + 50 kilograms of water, spraying.
Prescription II: 25% Prochloraz 30 ml + 50 kg water, or 25% Epiphyllum 12.5 ml + 50 kg water, or 1.5% bacteria off 40 ml / 50 kg water spray, the above three agents are used interchangeably.
(c) Acid rot
Symptoms: The fruits that are harmful to ripening start from the beginning of the fruit pedicle, brownish at the beginning, and then extend to the whole fruit, causing the peel to turn brown and rot, and the flesh rot and sour. When wet, the diseased part has fine powdery white mold.
Control methods: to strengthen the cultivation and management, pay attention to the prevention and treatment of litchi, elephant lice, locust worms, harvesting and storage and transportation to minimize fruit damage; clearing the ground in winter when the drop of fruit, reduce the source of the disease.
Drug control:
Prescription I: Spray 25% Prochloraz 25 ml + Fortune 250 ml + 50 kg water solution before harvesting fruit.
Prescription 2: Take effect of the practical 25% of the fresh-keeping grams of 30 ml +2,4-D5 grams + blessing spirit 1 kg plus 50 kg of water dipping fruit 1-2 minutes.
(d) Leaf spot
Symptoms: gray spots: lesions from the tip of the leaf to the leaf edge expansion, round to oval, auburn, after the synthesis of irregular large lesions, turned gray, the size of the needle can be seen on the black spots.
Bai Xingxing: Small, round, brownish-leafed lesions on leaves, enlarged to grayish white, brown on margin, with several black, small, granular spots. The disease is brown on the back, the edges are not obvious, and there are sometimes yellow halos around.
Brown spot type: round or irregular brown spot, enlarged central grayish brown, brownish brown. The back of the leaf is hazel, with dark spots on the upper part. The lesions synthesize large lesions that spread to the leaf base and cause defoliation.
Control methods: Increase the use of organic fertilizers, remove water from the orchard in a timely manner, renew pruning and sensational orchards, grasp the clean gardens, remove litter, concentrate burn, and prevent and control various insect pests. For an orchard with history of onset, summer and autumn should be checked frequently and if there is any disease, timely spraying and prevention.
Drug control:
Prescription I: 77% of copper, 90 grams + 50 kilograms of water, spraying;
Prescription 2 : 25% Epiphyllum 12.5 ml + 50 kg water, spraying;
Prescription 3: 25% Prochloraz 20ml + 50% anthrax covered with 30g + 50kg water, spraying.
(v) Algae spot disease
Symptoms: There are gray-green lesions on the leaves or on the old leaves. They turn into purple-brown afterwards. They are nearly round and have irregular edges. They have orange-brown velvet and turn dark brown.
Control methods: Increase the organic fertilizer, eliminate water in time, and reasonably trim. After the clear garden and early onset of medication control.
Drug control:
Prescription I: 77% of Guanyin copper 1 package 90 grams of water plus 50 kilograms of liquid preparation, spray;
Prescription 2 : 30% green decoction 100 ml + 50 kg water, spraying;
Prescription 3: 25% Prochloraz 30 ml + 50 kg water, spraying.
(6) Coal smoke
Symptoms: Dark brownish mildewed leaves at the beginning of the leaves, followed by a velvety layer of black mold. In severe cases, the whole leaves are covered with black mold.
Control methods: Properly pruning, strengthen fertilizer and water management, and timely control of scale insects such as scale insects, whiteflies and roundworms.
Drug control:
Prescription I: 20% killer 50 ml + 25% chlorophylla 13 ml + 50 kg water, spraying;
Prescription II: 40% Zhen Li 35 ml + 25% Prochloraz 35 ml + 50 kg water, spray.
(7) Ghost disease
Symptoms: When young shoots are damaged, the young leaves become small, curved, light green or yellow-green and cannot be unfolded, or have a distorted, mottled mosaic; petiole broadens, and some become banded deformed leaves. In severe cases, the new shoots are shortened and clustered, showing a broom-like shape, and young leaves fall off into bald branches. Spikes are affected, internodes are shortened, clusters are clustered in flower spikes, and flowers are deformed, densely integrated into the ball, easily falling off, and not as strong. Harmful shoots and spikes of litchi and longan.
Control methods: Quarantine is banned, seedlings, scions and diseased seeds are prohibited from wards; disease-free seedlings are cultivated. Seed-bearing rootstocks were cultivated from the disease-free parent trees, scion was taken from the disease-free, high-quality and strong mother plants, and grafted seedlings were planted; the pest control was strengthened. The shoots were sprayed to prevent litchi and wood lice.
Drug control:
Prescription I: 50 kg of water plus 1.5% powerful virus Wei 35 ml + 3% insects that is grams of 20 ml + Green Green 60 ml, spraying;
Prescription two: 50 kg of water plus 3.95% of the virus will be 60 grams of +10% imidacloprid 1 two + green leaf baby 35 ml, spraying.
(8) Lichens and mosses
Symptoms: The gray-gray or gray-green lichen tissue attaches to the branches of the tree. The moss attaches to the branches and leaves of the tree with pale green or green moss roots. Both absorb the water and nutrients of the tree, affecting the normal growth of the plant and weakening the tree vigor.
Drug control:
Prescription I: For severely affected orchards, after clearing the garden in winter, the main stem and the thicker branches of fruit trees can be brushed with 10%-15% lime emulsion;
Prescription 2: After fruit picking, use 45% Dysonam ammonium 200 ml + 50 kg water to spray on the trunk.
Prescription 3: In combination with the winter garden, use 30% sorghum 100 ml + alkali 1-2 kg spray.
(9) Angular Cheeks
Symptoms: adults in the young shoots, buds, leaves on the feeding hazards, nymphs fixed on the back of the blade and the formation of the back of the abdomen, foliar worms raised, so that the leaves appear a spike-like protrusion, blade distortion, severe change Yellow falling early, affecting the normal growth of the leaf, this worm is also a long-distance poisonous prion disease transmission medium.
Control methods: Strengthen the management of fertilizers and waters, make the shoots long and neat, grow green and fast, and reduce harm.
Drug control:
Prescription I: 40% chlorpyrifos 50 ml + 50 kg water, spraying;
Prescription 2: 10% imidacloprid 30 ml + 50 kg water, spraying;
Prescription 3: 20% acetamiprid 12.5 ml + 50 kg water spray. Pay attention to the fact that the spray should be sprayed once when the sprouts grow about 5 centimeters and sprayed once every 7 days.
(ten) Longan Chicken
Symptoms: Nymphs and adults suck the juice from the trunk or shoots. When they are severe, they can weaken, dry up, and cause fruit drop. The excrement can also cause soot.
Control methods: artificial catching before wintering adults lay eggs, during the spawning period, combined with pruning or sparse roots, cutting off or scraping off the egg masses, nymphs sweeping away and destroying nymphs.
Drug control:
Prescription I: 2.5% Riesling 25 ml + 50 kg water, spraying;
Prescription 2: 20% fenpropathrin EC 30-50 ml + 50 kg water, spraying;
Prescription 3: 40% chlorpyrifos EC 30 ml + 50 kg water, spraying.
Pay attention to spraying control in young nymphs.
(11) Longan
Symptoms: Chengyu, Ruoqiang in the flowering spikes and freshly sprouted unleavened young leaves piercing sap, resulting in shortening between flower spikes, buds can not be normally open, become swollen flowers, long time does not fall off. The tender shoots were shortened between internodes, with branches spreading, and young leaves bowing.
Control methods: The densely planted orchards must be willing to cut down trees, so that the orchard planting density is reasonable, air and light. The shading of the internal litchi, pendulous branches or dense branches should be cut off in time. Once you find a damaged shoot, cut it off immediately and burn it. In the new shoot compound leaf growth period to the beginning of see 2- 3 red leaves and new shoots fully developed when the green turn to use the agent control.
Drug control:
Prescription 1: 15% broom net emulsion 30 ml + 50% sulfur suspension 80 ml + 50 kg water, spraying;
Prescription II: 1.8% Mothing 25 ml + 50 kg water, spray;
Prescription 3: 20% fenpropathrin 30 ml + 50 kg water, spraying.
(12) Turtle Longhorn
Symptoms: The larvae feed on the trunk and branches, first feed under the cortex, and then enter the xylem to form a flat-shaped tunnel. At a certain distance, they bite a small hole to ventilate and excrete excrement and affect the transport of water and nutrients. Causes the tree vigor to weaken and severe branches are empty. Adults bite the branch of the cortex that year, causing the shoots to dry.
Control methods: From July to August in the period of adult emergence, shake the branches, and the adult insects fall to the ground to collect and eliminate. Cut off the dead branches after being killed, together with the larvae burning them up. Or found a half-moon spawning bark on the bark, hammering the victim with a hammer and killing the eggs or larvae under the bark.
Drug control:
Prescription I: After the larvae enter the xylem, 1-2 holes in the upper part of the larvae bite the upper part of the latest orifice irrigation 40% anti- 40 ml + 5 kg water, or 80% dichlorvos 50 ml -100 ml + 5 kg water, Then block the orifice;
Prescription 2: Insult the antibiotic with a cotton ball and insert it into the fistula from the defecation hole, and then use a clay to block the orifice.
Prescription 3: Adults appear after 6 months, during the peak period of adults, anti-100 ml + 50 kg water is sterilized with 40% speed, or 40% chlorpyrifos 160 ml + 50 kg water, or 5% Ruijinte suspension 20-25 ml + The 50 kg water solution is sprayed on the branches.
(thirteen) horses
Symptoms: The leaves of the victim's leaves are curled, some are corrugated, some are bent backwards, veins are yellowish-green, and yellow-fleshed spots or linear ridges appear on the leaves. After the leaves turn yellow, stiff, easy to fall off. The top bud victim shrank.
Control methods: Tips should be neat, control winter shoots, field reservations or planting of weeds and other weeds to protect the breeding of natural enemies. A serious orchard has occurred and the use of drugs for the prevention and treatment of young nymphs at their peak is under control.
Drug control:
Prescription I: 3% worms are grams of 17 grams + 20% Green Spirit 25 ml + 50 kg of water dubbed liquid spray;
Prescription II: 10% imidacloprid 25 g + 50 kg water spray;
Prescription 3: Security 30 g + 50 kg water, spraying.
(14) Leaf roller moth
Symptoms: The larvae droop the young leaves into a cylindrical shape. There are also 3-5 leaf slivers that hide the hazards. Garnish the flower spikes when harming the flower. Larvae feed on them. Also fall into the nuclear hazard.
Control methods: Grasp the clean garden work, remove the weeds, cut off the victim's shoots, remove the egg masses, seduce the adult insects with black light, and measure and report before and after the full bloom, to master the control of larvae spraying during the incubation period.
Drug control:
Prescription I: 1.8% Ke Mo Ding 12.5 ml + 4.5% beta cypermethrin 25 ml + 50 kg water, spraying;
Prescription 2: 40% chlorpyrifos 50 ml + 10% cypermethrin 25 ml + 50 kg water, spray.
(15) Small gray butterfly
Symptoms: The larvae feed on the nucleus, the boring hole is nearly round, the peripheries are smooth, the wormholes are not attached to the wormholes, and the orifices face downward, and the damaged fruits do not fall off after drying.
Control methods: removal of fruit, hook bark crack insects. Master egg incubation period, combined with the prevention and treatment of locust aphid in a timely manner.
Drug control:
One prescription: Spray 90% trichlorfon crystals 1 plus 50 kilograms of water 10 days after flowering, and then spray 1 time with 10% cypermethrin 25 ml plus 50 kilograms of water every 15 days.
Prescription II: 1.8% Ke Mo Ding 12.5 ml + 4.5% beta cypermethrin 25 ml + 50 kg of water into liquid spray.
(Sixteenth)
Symptoms: During the young fruit period, the larvae feed on the cortex of the fruit nucleus, resulting in fruit drop, fruit coloring period, damage, seed nucleus hard, larvae only harm the fruit pedicle, leaving worms, seriously affecting the yield, post-harvest larvae drilled tender or new leaves The damage of the midrib will cause the veins of the leaves to become brown, and the tunnel is filled with insect feces, which affects the normal growth of shoots.
Control methods: timely pruning after fruit picking, cutting off dense shoots to make the park airy and clear; timely put autumn shoots to reduce hazards; young fruit should be collected in time to focus on the burning down, reduce the early insect source; control winter shoots, Disrupt their food sources, reduce overwintering insect sources; timely spraying control, the key is to pay attention to forecast, can spray 1-2 times in the small fruit hook, 20-22 days and 10-12 days before the longan maturity of the spray 1 time, if it is best to delay the harvest of orchards plus one spray.
Drug control:
Prescription I: 30% Peach Xiaoling 35ml + 18% of insecticidal double water agent 100ml + 20% dead insect net 50g + 50kg water, spraying;
Prescription II: 2.5% Riesling 35 ml + 25% diflubenzuron 50 ml + 40% speed anti-50 ml + 50 kg water spray;
Prescription 3: 1.8% cadmium 25 ml + 4.5% beta-cypermethrin 25 ml + 50 kg water, spraying.
(17) Dodder
Symptoms: The branches are entangled with dodder, which can lead to scars, poor growth, or cover the crown, causing the leaves to fall off yellow, the branch shoots dry, the tree vigor is weak, and even the whole plant withers. Dodder seed propagates by seed, grows and encounters the host and wraps around. When the sucker reaches into the host, it absorbs nutrients and moisture from the host. The flowering results in late summer, after the seeds matured and wintered.
Control methods: Dodder seeds were buried deep before cultivating without germination. The orchard that has occurred has been cut off along with the host victim.
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The Colon Hydrotherapy Machine adopts the non-intrusive method to provide a safe and comfortable therapy, and it can operated easily; the user only need to hold the are-shape hydrotherapy nozzle and put it on the anus gently, the treated pure water with constant temperature and pressure will flow into the colon from the anus.
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Colon Hydrotherapy Machine Function:
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