Agricultural measures
1. Clean the pastoral. After harvesting, the crops will be ploughed in time to remove the weeds in the fields and surrounding areas, so as to reduce the amount of field bacteria and insects.
2. The rotation is down. In areas where wheat is full-blown and sheath blight is heavy, crop rotations are carried out, and non-host crops such as cotton, vegetables, sweet potatoes, etc. are rotated for more than two years.
3. Choose good breeds. According to the species of the main pests and diseases in the local area, targeted selection of plant resistant varieties and rational distribution of high-risk varieties, to prevent the occurrence of diseases. Before wheat sowing, the weed seed mixed in the wheat seeds should be removed to reduce the number of weeds.
4. Suitable for late broadcast. Based on the climatic conditions, characteristics of wheat varieties and cultivation techniques, the appropriate late-planting techniques for wheat in heavy wheat culm, root rot, and sheath blight, which have been re-emerging in the past years, can effectively reduce the infection and occurrence of pathogens.
Chemical control
1. Control soil-borne and species-borne diseases. 1 prevention and treatment of wheat full-blown disease. The disease is a typical soil-borne disease and should be comprehensively controlled. First, use dichloroisocyanuric acid to disinfect the soil. Generally, 500 grams of mu is mixed with 20 kg of fine soil and then spread uniformly. Then use 12.5% ​​of stilbenid suspension agent 200-300 ml, 1000 ml of water, and mix wheat seed 100. Kilograms, stir and mix for 3 hours, dry and sow. 2 Prevention of wheat smut, root rot and sheath blight, etc., can be used 3% difenoconazole seed coating agent 30 ml, 100-150 ml of water, mixed with 10-15 kg of wheat, heap stuffy 3 After drying for hours, sow, or use 6% tebuconazole to suspend seed coating agent 60 ml, 2000 ml of water, mixed with 100 kg of wheat seed, stuffing nausea 6 hours after drying to dry sowing.
2. Control underground pests and early locusts. For the prevention of underground pests, 40% methylisosaloprol EC may be used, or 50% phoxim EC may be added in 200 ml, 5000 ml of water, 100 kg of wheat seed, and the mixture is boring for 2-3 hours after being dried. Seed sowing, or use 3% phoxim granules 3-4 kg evenly spread and then sow. To prevent and treat early locusts, 70% imidacloprid water dispersible granules can be used to treat seeds. Each 70 g of imidacloprid water dispersible granules is diluted with 1500 ml of water into mother liquor, evenly seeded with 20-25 kg, and sown after sowing and drying.
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