Changfeng County has a large area of ​​wheat, rapeseed and vegetables planted in autumn and winter. The main diseases occurring in the growth process are sheath blight, powdery mildew, downy mildew, viral disease, sclerotinia, anthrax, etc.; Spiders, cabbage caterpillars, etc.; grass damage has aunt, mother-in-law, swine fever, big nest dishes. As these diseases, weeds and grasshoppers increase year by year, the amount of medication is increased, and the abuse of pesticides is more serious. In order to do a good job in this year's autumn and winter suburb agriculture economic development, we must start from the soil disinfection, seed treatment, pest control and weed control. First, soil disinfection and seed treatment 1, wheat soil disinfection and seed treatment. Per acre can be used 3% methyl isoflumine granules 5-7 kg, or 48% Roche Bentimes 150 milliliters mixed fine soil 30 kilograms, control of underground pests; with 15% triadimefon (triadimefon) WP 60-100 grams of 50 kg of dressing, control wheat powdery mildew, rust, sheath blight, barley stripe and other diseases. 2, rape seed processing. Disease: Before the sowing, the seeds are screened to remove the big sclerotia, then the seeds are sorted with 10% saline, the floating fleas and small sclerotia are removed, and the sinking seeds are washed and dried and sowed. Insect pests: Use 70% exterpena pine wettable powder 0.5 kg seed dressing 50 kg heap stuffy more than 12 hours. 3, vegetable seed treatment and soil disinfection. (1) Seed Disinfection: For the prevention of downy mildew and black spot, we can use Fumei double wettable powder or chlorothalonil wettable powder, and apply 0.4% of the seed amount. The soft rot may be Caifengning or special seed coating agent. (2) Disinfection of bed soil: 50% of copper citrate copper (DT fungicide) wettable powder 500 times solution can be used for cabbage kaffir, layered spray in the soil, mix well and spread into the seedbed; 50% more bacteria can also be used Ling WP and 50% thiram wettable powder 1:1 mixing, or 25% metalaxyl wettable powder and 70% dexamethasone wettable powder 9:1 by mixing, per square meter medication 8 - 10 grams is mixed with 15-30 kilograms of fine soil. When sowing, 2/3 of them are laid on the surface of the bed and 1/3 is covered on the seeds. Second, the prevention and control of pests and diseases at the seedling stage of wheat and wheat 1. The prevention and control of wheat diseases and insect pests. In order to do a good job of controlling wheat pests and diseases, it is necessary to promote seed coating technology; in the early spring, we should do a good job of “one spray and three defenses†to control sheath blight, powdery mildew, and Maiyuan spiders and wheat maggots. 2. Rape seedlings main pest control. For vegetables, hops, cabbage caterpillars, etc., can be used once again net, pyrethroids and other agents to control: the virus disease, white rust, etc., with 20% per kilogram of virus K, virus A 100 grams of water spray control of 50 kg; against white rust Apply 40% carbendazim or 70% mancozeb 75-100 ml per acre to evenly spray water. 3, vegetable seedling pest control. For downy mildew, anthrax, black spot, soft rot, etc., 72% DuPont Kelu wettable powder, 75% chlorothalonil 100g, 77% can be used to kill wettable powder 100-150g water 50 Kilogram spray prevention and treatment, prevention and control of seedling pests with imidacloprid pesticides, Spodoptera extinguishment, control and control. Third, the prevention and control of wheatgrass field damage, a small wheat field removal method. (1) Soil treatment: Use 50% to 100 ml of 60% butachlor in the mu and spray 50 kg of water before seedlings in wheat. (2) Stem and leaf treatment: In the field of grass-based weeds, 50% hyperosmotic isoproturin 125g or 50ml of 6.9% humerus is used for mu, and 40kg of water is evenly sprayed in the second to third leaf stage of weeds. For dicotyledonous weeds, 12 g of 15% Ticloslonil or 1–1.5 g of 75% superstars were used to spray 30 kilograms of water on weeds at the three- to four-leaf stage. The monocotyledonous weeds were mixed in a plot with 15% Sifenurron 1g and 50ml of 6.9% Hummer, and 40 kg of water was sprayed on the weeds at the second to third leaf stage. 2, weeds in rape fields. (1) Soil treatment: 50% acetochlor 60-100 ml for mu, spraying 30 kg of water before seedling sowing, or 2-3 days before transplanting rape, 41% of Danda water agent 300-400 Ml or 10% glyphosate water spray 800-1000 ml 30 kg water. (2) Stem and leaf treatment: Monocotyledonous weeds are mainly used in rapeseed six to eight leaf stage, weeds two to three leaf stage, and mu using 17.5% oil grass double cover 90-100 ml or 10.5% efficient grass cover 30 ml or 8.8% psyllium stand net 30-50 ml 40 kg water spray. For dicotyledon-based plots, use 50% of Gotemki 30ml or 15% Koraugac 100ml or 17.5% of oil grass 90g of double emulsion oil, 40kg of water to spray the weeds in the second to third leaf stage . Single and dicotyledon weeds are mixed in plots, with 17.5 percent oil grass double-covered 100 ml or 50% high-tech 30 ml plus 10.5 percent efficient straw-covered 15 kg, 40 kg water spray. 3, weeds in vegetable fields. Chemical weeding of spring onions, carrots, celery and solanaceous vegetable fields, 48% trifluralin cream 50-100 ml before sowing, or 48% diammonium EC 150-200 ml spray 30 kg of water on the soil surface, Immediately mix 3-5 cm or simmer into the soil. The cruciferous vegetable field was treated with 100 ml of trifluralin or 48% of aziridin 150-200 ml of spray soil 5-7 days prior to sowing and immediately mixed with 5 cm of top soil and sowed. After sowing, soil treatment before seedlings, 20% diammonium EC 200-250 ml or 50% acetochlor EC 75-100 ml, 60% butachlor EC 100 ml spray soil treatment. Fourth, pay attention to the choice of no wind and rain weather application; spraying strive to be even, avoid heavy spray; the amount of drugs should be strictly controlled; vegetable field banned high toxicity and high residual pesticides, wheat field banned with metsulfuron, chlorsulfuron and Its complex formulation, vegetable field banned amine tribenzulfuron and other agents. (Source: Anhui Rural Network)
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