The harmful insect pests of corn mainly include corn borer, corn borer, corn thrips, corn spider mite, tigers, earthworms, golden worms, cockroaches, big-legged sting crickets, Asian fly hoppers, broad-winged ants, and winged worms. Narrow-fingered chicks, Siberian tadpoles, Spodoptera frugiperda, wheat skin thrips, red-winged tadpoles, leafhoppers, millet stalks, millet ash, beet armyworm and so on.
1. Control methods Different control methods are used according to the different growth stages of corn
2. Sowing period: The prevention and control of underground pests and seeds spread diseases.
Implement rotations and avoid continuous operations. Clean the garden and reduce the initial infection source. Use strong resistance varieties.
Use seed coating or use 50% phoxim EC per acre 200-250 grams plus fine soil 25-30 kilograms mix well after ridge strip application, or use 3% phoxim granules 4 kg mixed fine sand Application of underground pest control.
With 50% triamcinone powder 1 kg water 5 kg dressing 60 kg, or with 25% Triadimefon 0.3% dose seed smut and full-blown disease prevention.
3, seedling stage: to prevent corn borer, Spodoptera exigua, Rotary heartworm, zinc deficiency mainly.
In addition, weeds and field weeds were removed from the field and the weeds and diseased plants were burned in a timely manner to reduce the source of insects. Strengthen water and fertilizer management and promote early seedling growth. Use 40% Dimethoate EC or 40% omethoate EC 2000-3000 times spray to prevent corn borer and remedy Laodelphax striatellus.
Occurrence of local larvae of Spodoptera littoralis and Rotona pseudhae, with 40% Dimethoate 500 times or 90% trichlorfon 300 times or 50% dichlorvos 400 times.
4. 25-30 kg of 0.2%-0.3% zinc sulphate solution per acre is used to prevent and treat zinc deficiency at the leaf stage of è¡©-5 leaf stage to enhance the disease resistance of the plant.
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