When the corn field tube first grows 3-4 leaves of the seedlings, the seedlings should be vaccinated to remove the weak and disease-resistant hybrids, leaving only one seedling per hole to ensure uniform growth of individuals and coordinated growth of the groups; , Loosing the soil to prevent the build-up of grass after rain and grass damage, improve soil permeability, increase air-promoting roots; Third, timely fertilizer, top-seeding seedlings when the corn Dingmiao, 6-7 tablets when full-spreading joint fertilizer, 11- Twelve leaves in the whole exhibition time (trumpet phase) top-dressing panicle fertilizer; Fourth, do a good job of pest control, early prevention and control of corn borer and other pests, and use low toxicity without residue pesticides, control effect of one month before harvest The best method is to use 1.5% phoxim granules, 3.75 kilograms (0.25 kg/mu) of mixed soil, 30-40 kilograms of soil per hectare to produce toxic soil, sprinkle into the heart of corn, and inject 500 ton per kg of toxic soil. 600 strains, or with 90% crystal trichlorfon watered 1000-2000 times liquid irrigation leaves, 60-100 per kilogram of liquid perfusion.
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