I. Soil selection
Loose, sunny, easy irrigation and drainage, fertility in the upper, deep soil, rich in organic matter in the field (ground) block, debris should be cleared before sowing, reduce the source of overwintering insects.
Second, select good seeds, timely sowing
According to the market and the acquisition needs of merchants, the varieties should be selected for high yield, good quality, good neatness, and strong resistance. It can be planted all year round, and it can be planted for 1 to 2 days before sowing.
Third, apply the base fertilizer, implement the standardization
Due to the high amount of fertilizer required for sweet and crispy corn varieties, after deep plowing in the fields, it is generally required that 1500 to 2000 kg of farmyard manure be used for Mushi and 40 to 50 kg of high-efficiency compound fertilizer. The use of wide and narrow rows of planting models as well, its specifications are: large row spacing 80 cm, a small row spacing of 40 cm, a width of 80 cm, a spacing of 35 cm, pull the line to open the ditch planting, ensure 3000 basic seedlings per acre. A 30-cm fertilization ditch is opened in the middle of the sorghum surface. Fertilizer is applied to the soil. After the sorghum surface is smoothed, the herbicide and insecticide cover film are sprayed for sowing.
Fourth, sowing method
1, soaking germination: soaking with water for 3? 4 hours, remove and wrap up with a wet towel, germination 2? 3 days, buds exposed white can be sown.
2. Live broadcast: Fine soil preparation before sowing, deep plowing, fine soil leveling and ditching. The seeding depth is generally controlled at 3 to 4 cm. After sowing, the seedling water will be poured out in time according to the soil conditions. Can not be flooded, so as not to affect the emergence of bad seedlings, timely rupture after emergence, to avoid burn seedlings.
3. Seedling transplanting: Prepare nutrition plate or nutrition bag before sowing, 3000~3500 holes or bags per acre, sow 2~3 cm seeding soil to make seeds not suitable, and pour seedling water. Transplanting from the second leaf to the third leaf stage, transplanting the seedlings first, and then planting the seedlings for management. Pouring water after planting will increase the survival rate.
V. Daejeon Management
(1) topdressing: sweet corn seed, small storage nutrients, weak growth after emergence, seedlings in the 3-4 leaf stage, the root can not fully absorb the base fertilizer for growth needs, available nitrogen fertilizer 2.5 ~ 3 kg per acre Urea watered 300 times for pouring, supplement nutrients lack; 5? 6 leaves per acre to recover urea 10? 15 kg, prompting robust growth; into the big horn period of 30? 35 kg per acre harvesting panicles, and strive to spike a large number of high-yield .
(2) Moisture management: sweet and crispy corn likes moist, afraid of pickle and drought, overgrowth of corn stagnates, leaves yellow and even withered, dry and weak, early picking male, low yield, so we must control the sweet corn at various times For the water supply, the horse water is irrigated once at the seedling stage, dial stage, tasseling, silking and filling stage. Pay attention to warming water for winter in early January to prevent cold damage.
(3) Picking pods and fruit thinning: Super-sweet and brittle corn has more tillers (side shoots). To ensure ear production, it should be removed in time, and the main stem and leaves should be avoided when removing. Leave only one pod (per ear) per plant and remove excess pods in time.
VI. Pest Control
During the seedling stage, it mainly controls underground pests, such as ground tigers, corn borers, beetles, etc. From the horns to silking stage, they mainly control aphids, cotton aphids, and corn borers. High temperature and high humidity mainly control leaf spot, sheath blight, and rust. And put bait in the field.
Seven, timely harvest
When the sweet corn withered and blackened, the grain at the top of the panicle was full, and the top lobe began to soften, it could be harvested.
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