Techniques for Controlling Diseases and Pests of Wheat in Autumn Sowing

The autumn sowing date is a key period for controlling various pests and diseases of wheat. The main control objects are earthworms, cockroaches and other soil pests and wheat midge; followed by wheat seedling aphids, spider mites, smut, full-bleeding disease and powdery mildew. Grasping prevention and control at the autumn sowing date can play a multiplier role in controlling wheat pests.
I. Prevention and control of underground pests and midge pests
1. Soil treatment in a variety of underground pests mixed area or a separate serious area to use soil treatment to control. In order to reduce soil pollution and avoid killing natural enemies, topical application and application of granules should be promoted. Per 667m2, use 5% methylisothiphos granules 1.5-2kg, or 3% phoxim granules 2-2.5kg to spread the ground evenly on the ploughing ground and plunge into the soil with the plough. Can also be used 40% methylisothiphos EC or 50% phoxim EC, 250ml per 667m2 dosage, add 1-2kg of water, mixed fine soil 20-25kg dubbed toxic soil application.
In areas where the wheat midge is severely affected, the ground closure method can be used. That is, the enemy soil is used to mix poisonous soil, and it is used evenly to distribute into the wheat field.
2. The seed dressing of pesticides can be used for the prevention and control of seedlings in the general area of ​​soil pests. The ratio of pesticides used to control soil pests is 40% with methyl isothiphos EC at 1:100:1000 (pesticide:water:seed), 50% phoxim, 50% A Amine phosphate emulsified at 1:50:500. When seed dressing, the pesticide is diluted with water according to the required ratio and then mixed into the liquid. Mix with the seed and mix thoroughly for 5-6 hours (absorbing more than 12 hours). After sowing, the seeds can be sowed.
Second, smut, stripe rust and powdery mildew prevention and treatment using pesticide seed dressing can not only control wheat smut, but also can effectively control the pre-winter wheat rust, full-bleed disease, powdery mildew and the occurrence of hazards, reduce the wintering bacteria the amount. Commonly used seed dressing agents are 25% triadimefon wettable powder according to the wheat seed weight 0.12% of the amount of dry mix, 33% streptomycin net WP, 12.5% ​​speed Baoli wettable powder according to the wheat seed weight of 0.2% of the amount of wet mix. For the control of wheat smut, 200 g of 50% carbendazim WP may be used per 100 kg of wheat seed, or 143 g of 70% thiophanate-methyl wettable powder may be used. When dressing, first dilute the drug with a small amount of water, and use a sprayer to spray the liquid onto the seed, mix it while spraying, and sow the seeds for 5-6 hours.
III. Comprehensive Wheat Seed-Making Techniques For the combination of wheat ground pests and various pests at the seedling stage, insecticides, fungicides, yield-increasing bacteria or wheat-specific fertilizers can be mixed and used for disease prevention, pest control, and yield increase. Comprehensive effect. The first precaution is to use triadimefon for seed dressing. If wet mix or cream dressing is used, mix it and dry immediately to avoid phytotoxicity. Second, when the bactericide and pesticidal agent are mixed together, they must be mixed with insecticide. The agent sprays the insecticide evenly with a sprayer, spreads stuffy stuff for 3-4 hours, spreads out to dry, sows or mixes with the disinfectant; the third is if the mixed fertilizer and the production-promoting bacteria can mix with the disinfectant, but With the mix with the species; four is the use of mixed agents, generally only two kinds of fungicides, insecticides, mixed with a variety of pesticide seed dressing, easy to produce injury; Fifth, we must strictly in accordance with seed dressing practices to prevent human and animal poisoning, It is best to apply uniform seed dressing.
Fourth, the use of coated seed Seed coating is a seed treatment technology that combines disease prevention, pest management, and disinfection as a whole. It not only avoids diseases and insect pests, but also contributes to the development of nutrients and trace elements in seed coating agents. And plant growth regulator ingredients, and all coated seeds also have germination, rapid emergence, growth and development, improve quality, increase production. At present, 3% of the fine fungicide used for seed treatment is Difendan and 2.5% of Coke; insecticides are 60% of KAP, 40% of methylisofluthi, 50% of phoxim, especially In the wheat disease and pest mixed area, one kind of fungicide and one kind of insecticide can be used for seed dressing according to 0.2% of the seed amount, and the desired effect can be obtained.

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[Storage Conditions]
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