High-yield cultivation techniques for sweet and crisp corn

Sweet luscious corn rich in lutein and zeaxanthin is a good antioxidant, can effectively prevent the aging of human organs, is the world's gold crop recognized, so much favored by people. The market was once popular, and the planting area continued to expand. Due to lack of experience, growers generally reflect poor seedlings and low yields, failing to achieve the expected economic benefits. In order to make more farmers understand the biological characteristics of sweet and crisp corn, master cultivation management techniques, and produce high-quality, high-yield fresh sweet corn, it is necessary to briefly introduce the cultivation technology of sweet corn.

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 1-2 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, cultivating 1500-2000 kg of farmyard manure and 40-50 kg of high-efficiency compound fertilizer are generally required after deep plowing in fields. 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, ditch straightening, and sowing depth of 3-4 cm. After sowing, according to the soil conditions, the seedlings should be poured out in time, and the surface wetted. 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 depth of 2-3 cm to cover the soil to not see the seeds as appropriate, pouring enough 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) top-dressing: sweet corn seed is small, less nutrients are stored, seedling growth is weak, seedlings in the 3-4 leaf stage, the root can not fully absorb the base fertilizer for growth needs, quick-acting nitrogen fertilizer 2.5-3 kg per acre Urea watered with water 300 times for pouring, supplement nutrient deficiency; 5-6 leaves per acre to recover urea 10-15 kg, prompting robust growth; into the big horn period of 30-35 kg per mu of panicle fertilizer, and strive to spike a large number of high yield .

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