Corn rough disease prevention and control measures

1. Selection of resistant and disease-resistant varieties. According to recent surveys, there are some differences in the occurrence of diseases between varieties, and the incidence of disease-resistant varieties is lighter, and the diseased plant rate is below 5%. 2. Agricultural control. Before the planting of wheat, corn and other crops and before harvesting, remove the weeds in the edge of the field and the ditch, intensively cultivate and timely weed to reduce the source of the insects. Spray 5% times of 40% omethoate emulsifiable concentrate on corn fields and surrounding weeds. Appropriate adjustment of corn sowing date, so that the corn seedling period missed the booming period of the gray planthopper. Strengthen field management, improve plant disease resistance, timely remove diseased plants, reduce diseased plants and toxic sources, and seriously replant early-stage legume crops or sweet and waxy corn to increase economic income. 3. Chemical control. Including nursery prevention and control of sorghum. The medicaments for the treatment of wheat stubble and gray planthopper can be controlled by spraying 10% imidacloprid 10g; in the third and fourth leaf stage of corn, spraying the plants around the field and the plot to control the gray planthopper. The agent can be sprayed with 40% omethoate EC or 5% Regent suspension 30 ml or 10% imidacloprid, 30-40 kg of water; 4.5% beta-cypermethrin 30 ml or 48% chlorpyrifos 60-80 ml, Spray 30-40 kg of water. The spraying power is even and thoughtful, and it is controlled once every 7 days to ensure the control effect. Linyi Fertilizer Network Copyright

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