Corn is the second largest food crop in the city, and it can be divided into two parts, corn for fresh corn. Forage corn is divided into winter corn and spring corn. Fresh corn is divided into fresh corn and annual waxy corn. This is mainly about feeding corn production.
I. Species Selection The corn varieties currently used in production include the "Zhengda" series, the "Jin farming" series and the local conventional ones. The winter corn is recommended to choose "Fengyuanzaohao". In the selection of species, it must be safer to select seeds that have been planted locally.
II. Sowing Date Arrangement Winter corn is usually planted in late November or December of the first year and harvested in May of the following year. The spring maize is usually planted from late April to May and harvested from August to September.
The cultivation of winter corn in our city is generally more standard and the yield per mu is higher, with a maximum of 700 kg. Due to the extensive planting and management of large spring corn, the yield is only about 160 kilograms.
3. Site preparation and sowing of plots after the “two ploughs and two hoeingsâ€, 1.2 meters from the ditch to the ditch, first applying 40 kg of special compound fertilizer for the corn and then closing the car, so that the car is 0.8 meters wide. 0.2 to 0.25 meters deep. According to the spacing of 0.3 meters and spacing 0.5 meters, the seeds were planted, and the seeds were sown with 1,2,1 and 2 seeds per hole (or wet seeds after soaking) to cover the fine soil. Planting density per acre in 4000-4400 strains, leaving a single plant can be beneficial to the balanced growth of individual corn, to achieve the purpose of high yield. Mu with 200 grams of "Gan Yuzhuang" watered 50 kg of herbicide sprayed on the car, and while spraying edge film, the film pressed tightly moisturized. After sowing, “running horse water†can be filled once to promote seed budding. After the young seedlings grow to 2 to 3 leaves, they will be broken and emerged, and they will be poured with fertilizer (biogas liquid is best) once, and the membrane can be kept warm and moisturized.
According to the characteristics of corn need fertilizer, use the results of soil testing and formula fertilization, fertilize according to the recommended fertilization program, increase the fertilizer utilization, achieve the purpose of reducing costs, increasing fertilizer efficiency, increasing production and income, and reducing environmental pollution.
Fourth, field management
1, seedling management, seedlings, hybrid corn production is more prosperous, to be broken after the film, to seedlings, make up seedlings, each hole can only stay one, the lack of ponds to make up in a timely manner, and pouring enough water. Weeding and weeding, the early seedlings should be cultivated and weeded in time. After the corn is sealed, the weeding pressure will be lighter. This is mainly the underground tigers, wireworms and other underground pests.
2, split booting period, cultivating soil, to prevent plant lodging. Clever panicle fertilizer, heavy ear fertilizer. Mu compound fertilizer 10 kilograms or urea 10 kilograms Shi Zhu points Shi, cover soil. The application time was at the "big bell stage" and during the day of smallpox. Applying water once after application will help the plants absorb nutrients.
At this point to control corn spot, can be used 50% thiophanate-methyl WP 600 times spray control, every 7 days and then again. Corn rust can be sprayed with 25% triadimefon WP 1500 times, and then 1-2 times every 7 days.
Insect pests mainly include corn bran, etc., and 1% phoxim granules can be used with 1 to 2 kg per mu applied to large bell mouths or sprayed with 15% chlorfenadazole 150 g water and 50 kg water.
V. Late-stage management Harvesting artificially-assisted pollination can increase yields, and is carried out at 9 to 11 am every morning. After the flowering pollination period is the period of maximum water requirement for corn, at this time there should be sufficient water supply. Timely harvesting, timely harvesting of maize kernels after they have become mature, prevent agricultural damage and other factors affecting production due to rain.
VI. Spring Maize The spring corn in our city is mainly planted on dry land. The sowing time is mainly determined by soil moisture and precipitation. Seeding is generally started from the end of April and harvested from August to September.
1. Site preparation: Requirements are the same as winter corn (two plows and two plows). Due to the lack of irrigation conditions in dry land, the fertility of the general land is poor, and the special compound fertilizer for 40 kg of corn is required to be used as the base for the application of Mushi in the whole carriage. Standardized land preparation facilitates subsequent field management.
2. Seeding: Design the planting density according to the characteristics of the varieties. The compact leaf-shaped species should be closely planted (4000 plants/mu). On the contrary, 3000-3500 plants/mu should be properly planted and planted in narrow rows. Sowing way with winter corn. After the seedlings are grown to 4-5 leaves, they can effectively control grass weeds. The control of underground pests can be coated with 1% phoxim granules in the cave or in the cave.
3, intercropping technology applications. The dwarf crops such as soybeans and potatoes can be planted between two rows of corn, which has the effect of fertility, space utilization, and income increase.
4, weeding and weeding: seedlings grow to 6-7 leaves (big bell season) combined with topdressing should be timely cultivator soil, while weed removal, which will help rapid growth of corn. Prior to this (3 leaf stage), the seedlings and seedlings were planted only once per hole.
5. When entering the smallpox, it is the period with the largest amount of corn growth, and the plant height should also be increased by more than 50%. Therefore, it should be combined with the recovery of panicle fertilizer (10 kg urea plus 5 kg of potassium fertilizer), then cultivating the soil and weeding once to prevent the plant from falling Shape, promote the growth of the ear and tassel.
6, pest control and winter corn the same, the spring should strengthen the prevention and treatment of corn rust and rat damage.
7. Farmers with large corn planting area in mountainous areas are advised to choose corn stubbles as long as they are, and they will be able to prevent the impact of rain on the panicles. This can reduce the occurrence of mildew due to lack of labor. , resulting in a bumper harvest.
8. The excavation of corn planting trenches by horizontal lines can significantly reduce the erosion of soil and nutrients by rainwater, reduce soil erosion, and increase crop yield. On the other hand, according to the characteristics of varieties, rational close planting is one of the effective ways to increase production.
I. Species Selection The corn varieties currently used in production include the "Zhengda" series, the "Jin farming" series and the local conventional ones. The winter corn is recommended to choose "Fengyuanzaohao". In the selection of species, it must be safer to select seeds that have been planted locally.
II. Sowing Date Arrangement Winter corn is usually planted in late November or December of the first year and harvested in May of the following year. The spring maize is usually planted from late April to May and harvested from August to September.
The cultivation of winter corn in our city is generally more standard and the yield per mu is higher, with a maximum of 700 kg. Due to the extensive planting and management of large spring corn, the yield is only about 160 kilograms.
3. Site preparation and sowing of plots after the “two ploughs and two hoeingsâ€, 1.2 meters from the ditch to the ditch, first applying 40 kg of special compound fertilizer for the corn and then closing the car, so that the car is 0.8 meters wide. 0.2 to 0.25 meters deep. According to the spacing of 0.3 meters and spacing 0.5 meters, the seeds were planted, and the seeds were sown with 1,2,1 and 2 seeds per hole (or wet seeds after soaking) to cover the fine soil. Planting density per acre in 4000-4400 strains, leaving a single plant can be beneficial to the balanced growth of individual corn, to achieve the purpose of high yield. Mu with 200 grams of "Gan Yuzhuang" watered 50 kg of herbicide sprayed on the car, and while spraying edge film, the film pressed tightly moisturized. After sowing, “running horse water†can be filled once to promote seed budding. After the young seedlings grow to 2 to 3 leaves, they will be broken and emerged, and they will be poured with fertilizer (biogas liquid is best) once, and the membrane can be kept warm and moisturized.
According to the characteristics of corn need fertilizer, use the results of soil testing and formula fertilization, fertilize according to the recommended fertilization program, increase the fertilizer utilization, achieve the purpose of reducing costs, increasing fertilizer efficiency, increasing production and income, and reducing environmental pollution.
Fourth, field management
1, seedling management, seedlings, hybrid corn production is more prosperous, to be broken after the film, to seedlings, make up seedlings, each hole can only stay one, the lack of ponds to make up in a timely manner, and pouring enough water. Weeding and weeding, the early seedlings should be cultivated and weeded in time. After the corn is sealed, the weeding pressure will be lighter. This is mainly the underground tigers, wireworms and other underground pests.
2, split booting period, cultivating soil, to prevent plant lodging. Clever panicle fertilizer, heavy ear fertilizer. Mu compound fertilizer 10 kilograms or urea 10 kilograms Shi Zhu points Shi, cover soil. The application time was at the "big bell stage" and during the day of smallpox. Applying water once after application will help the plants absorb nutrients.
At this point to control corn spot, can be used 50% thiophanate-methyl WP 600 times spray control, every 7 days and then again. Corn rust can be sprayed with 25% triadimefon WP 1500 times, and then 1-2 times every 7 days.
Insect pests mainly include corn bran, etc., and 1% phoxim granules can be used with 1 to 2 kg per mu applied to large bell mouths or sprayed with 15% chlorfenadazole 150 g water and 50 kg water.
V. Late-stage management Harvesting artificially-assisted pollination can increase yields, and is carried out at 9 to 11 am every morning. After the flowering pollination period is the period of maximum water requirement for corn, at this time there should be sufficient water supply. Timely harvesting, timely harvesting of maize kernels after they have become mature, prevent agricultural damage and other factors affecting production due to rain.
VI. Spring Maize The spring corn in our city is mainly planted on dry land. The sowing time is mainly determined by soil moisture and precipitation. Seeding is generally started from the end of April and harvested from August to September.
1. Site preparation: Requirements are the same as winter corn (two plows and two plows). Due to the lack of irrigation conditions in dry land, the fertility of the general land is poor, and the special compound fertilizer for 40 kg of corn is required to be used as the base for the application of Mushi in the whole carriage. Standardized land preparation facilitates subsequent field management.
2. Seeding: Design the planting density according to the characteristics of the varieties. The compact leaf-shaped species should be closely planted (4000 plants/mu). On the contrary, 3000-3500 plants/mu should be properly planted and planted in narrow rows. Sowing way with winter corn. After the seedlings are grown to 4-5 leaves, they can effectively control grass weeds. The control of underground pests can be coated with 1% phoxim granules in the cave or in the cave.
3, intercropping technology applications. The dwarf crops such as soybeans and potatoes can be planted between two rows of corn, which has the effect of fertility, space utilization, and income increase.
4, weeding and weeding: seedlings grow to 6-7 leaves (big bell season) combined with topdressing should be timely cultivator soil, while weed removal, which will help rapid growth of corn. Prior to this (3 leaf stage), the seedlings and seedlings were planted only once per hole.
5. When entering the smallpox, it is the period with the largest amount of corn growth, and the plant height should also be increased by more than 50%. Therefore, it should be combined with the recovery of panicle fertilizer (10 kg urea plus 5 kg of potassium fertilizer), then cultivating the soil and weeding once to prevent the plant from falling Shape, promote the growth of the ear and tassel.
6, pest control and winter corn the same, the spring should strengthen the prevention and treatment of corn rust and rat damage.
7. Farmers with large corn planting area in mountainous areas are advised to choose corn stubbles as long as they are, and they will be able to prevent the impact of rain on the panicles. This can reduce the occurrence of mildew due to lack of labor. , resulting in a bumper harvest.
8. The excavation of corn planting trenches by horizontal lines can significantly reduce the erosion of soil and nutrients by rainwater, reduce soil erosion, and increase crop yield. On the other hand, according to the characteristics of varieties, rational close planting is one of the effective ways to increase production.
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