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Key Points for Comprehensive Prevention of Major Rice Diseases and Pests in Southern Shaanxi Province
Rice blast is protected against seedling mites at the 3-4 leaf stage of seedlings, and at the end of June, it is protected against leaf blast at the flood season. At the end of July and early August, rice blast disease was prevented during the break period. 40% rice bran wettable powder 60-100 grams per mu or 25% tricyclazole wettable powder 100-150 grams sprayed on water, focusing on the prevention of panicle blast disease. Rhizoctonia solani control nitrogenous fertilizer application, shallow ground irrigation, moderate field drying, and enhanced plant disease resistance. During the flood season, 150 ml of 5% Jinggangmycin water or 50% thiophanate-methyl 100 g/mu is used for the flood season, and 50 kg of water is uniformly sprayed on the middle and lower parts of the rice plant. Rice smut disease resistant varieties. Formula fertilization to avoid partial nitrogen fertilizer. 5-7 days before heading, use 16% "harvest" of glutinous rice, 100g of WP or 15% triadimefon 100g per acre, spray 50kg of water to the ear, and spray it once every 7 days. , Can also cure sheath blight and panicle blast disease. After 5 to 7 days after the second cropping, the application of 3.6% pesticidal double granules 1.5-2.0 kg per acre is combined with topdressing. At the end of July and early August, the combination of “two preventions and one spray†pays attention to pesticide application and reduces insect-injured strains to prevent large areas of plant lodging. Before rice and rice fields were transplanted, we should do a good job of prevention and control of the motherland. 7-10 days after transplanting, with 25% of insecticide double water per acre 150 kg of water spray 50 kg, can also treat early aphids. At the end of July and early August, rice borers were selected for treatment of paddy fields with dark green leaves and late-maturing glutinous green leaves. The water spray was sprayed with 100-120 grams of 90% crystal trichlorfon per acre. Stop spraying all herbicides after flushing to ensure rice food safety. Rice leaf curlers should be promptly controlled when they find that the individual leaf tip of the field has been rolled up. Each acre can use 18% of insecticidal water-repellent agent 200-250 ml or 90% crystal trichlorfon 100 g, spray 50 kg of water, and use early evening facilities. Medicine is appropriate.