In the paddy field, cages are cultured with astragalus, and rice fields provide a good ecological environment for Astragalus membranaceus. Astragalus membranaceus is a loose soil of rice, and pests are devoured. Rice grains promote each other and complement each other, and high-yield rice crops are harvested, which is an effective way to invest in people and get rich quickly. Its cultivation techniques are briefly described as follows:
I. Rice field selection
The paddy fields used for raising pupa should have good water quality, plenty of water, convenient water intake and drainage, no drought and no rain, more soil, more light, no cold immersion, and a quiet environment. Planting early, middle and late rice fields can be (if the early rice field cages raise oysters, renewable rice should be selected).
Second, the cage settings
The cages set in paddy fields are generally rectangular or square, with an area of ​​10 to 25 square meters and a height of 1 to 1.2 meters. According to local experience, meshes for making cages must have three conditions: First, they should be strong and durable, they should be resistant to heat, heat, cold, and cold without damage, and they should have strong anti-aging resistance and pull force for about 3 years. Second, the mesh should not be used. Jumping yarn does not leak yarn; Third, the mesh is small, and it is advisable to use the tip of the yellow eagle to insert the mesh. The cage is set at the inlet and arranged neatly. The total area of ​​cages generally does not exceed one-third of the total area of ​​rice fields.
Put the box method: first drain the field water, according to the shape and size of the cage dredge 40 cm -50 cm, put the cage flat, the four corners of the cage opened with wooden stakes, and then back to the mud dug up Filled into the cage, the barrier is muddy or tiled, when the mud surface and the field surface in the cage are basically the same, and the mud surface is 60 cm-80 cm higher than the grid box. Paddy fields in non-cage areas are conventionally cultivated.
Third, seed stocking
The seedlings were planted (the cages were also conventionally planted and transplanted) and they were completely live. Astragalus seedlings can be purchased in the local cage without disease, no pests, no injury, no phytotoxicity, and the body is dark yellow individuals with large dark spots. Stocking density: 40-80 tails weighing 50 grams per square meter. Disinfect with 3% salt water before stocking.
Fourth, feed the bait
After stocking, scutellaria baicalensis was hungry for 3 days to 4 days before it was baited and fed. The varieties of bait are animal wastes and compound feeds such as cockroaches, fly pupae, snail meat, small junk fish, animal liver, brain and lungs. Feeding "live bait" does not require a feed station, but "dead bait" must be placed on a feed stand. The simple feed table can be made of screens and bamboo sheets to make "plate 箩" style. Each cage has 2 -4 feed stations. Feeding once every evening. After eating normally, the amount of bait is not increased or reduced by eating jaundice in about 2 hours.
V. Water Quality Regulation
Maintain a water depth of 5 cm to 10 cm in the cage. Water quality requirements are the same as those of fish farming. Water quality should be timely changed if there is a lack of oxygen in the water. In addition, the mesh needs to be washed after being blocked to maintain the exchange of water inside and outside the cage.
VI. Disease Prevention
As long as careful precautions are taken, jaundice generally does not develop. The measures include: selecting healthy and healthy seedlings, disinfecting the whole field before stocking, immersing and disinfecting the seeds when entering the ground, and feeding 3 days of oxytetracycline in the feed every 10 days to 15 days during the breeding process. Trane) anti-inflammatory, every 20 days Tiantian pour medicine disinfectant, timely replacement of new water, keep the water fresh, dissolved oxygen is sufficient.
Seven, rational fertilization and spraying pesticides
Fertilization method: the basic principle of re-using basal fertilizer, applying top-dressing fertilizer, organic fertilizer, and supplemented by chemical fertilizer. Planting and transplanting seedlings when transplanting paddy field Shizujifei, acres of consumption: fermented manure dung 600 kg -1200 kg, or urea 20 kg -25 kg, or 25 kg of ammonium carbonate. Clever application of fertilizer, per 667 square meters per dose: 200 to 400 kilograms of human livestock excrement, or urea 4 kg to 8 kg, or ammonium sulfate 8 kg to 12 kg, or superphosphate 4 kg to 8 kg. When applying fertilizer, according to the water quality of the paddy fields, the water temperature, and the amount of flexibility, do not cut too much each time, so as not to poison the jaundice. Inorganic top dressing is best for water spilling.
Spraying pesticides: First of all, we must correctly diagnose and control the types of pests. The second choice of pesticides should be as high-efficiency and low-toxicity as possible, such as methamidophos, dimethoate, malathion, dichlorvos, trichlorfon, dimehypo, rice bran, and Jinggangmycin. Third, the amount of each dose should not be too large. The pesticides of the above varieties will not cause harm to cockroaches if they are used at regular dosages. Fourth, the use of drugs as a powder should be distributed with water in the morning. The pesticide should be mixed with water and sprayed on the leaves after the dew has dried. Solid pesticides must also be sprayed with water. When spraying, reduce the amount of drug dispersed into the water. Fifth, with high temperatures, the toxicity of pesticides will be enhanced, and more attention should be paid to whether it causes damage to the jaundice. Sixth, the water depth of rice fields must be increased before spraying, and the water depth can reach more than 10 cm. If you worry about the impact of spraying on the jaundice, you can change the side of the spraying method is the safest. Seventh, in order to prevent drugs from poisoning jaundice, it can also be tested first and then fully used.
Eight, winter management
In winter, when the water temperature drops below 10°C, the pool water can be completely drained to allow the yellow toad to overwinter. At this time, a layer of straw should be placed on the mud surface, about 5 cm to 10 cm thick, to maintain the temperature and humidity in the soil. In various managements, we must also pay attention to the prevention of human, livestock, rat, bird, and weasels.
Nine, capture harvest
Before and after the Spring Festival, the market price of Huangqi is twice to four times that of May-September. At this time, the dredging will capture sales and earn a huge profit. In general, paddy fields are set up in cages, and rice production can increase by 5%-15%. Net profit per square meter of cages is 50-200 yuan.
(330400 Deyang County Fisheries Bureau, Jiangxi Province)