Rice disease and pest control process

1. Three preventive measures should be carefully implemented before rice sowing. 1402, Jinyou 974, you 974, you 166, Zhongyou 752, Jinyou 752, 65002, Xinxiangyou 80 and Honglianyou 6 should not be planted as far as possible. 1.2 early ploughing and retting winter fallow fields and winter crop fields in spring to reduce the source of borer insects. Our city requires that the ploughing be finished by April 15. 1.3 do a good job in seed treatment to reduce the incidence of diseases and insect pests. The seeds of early rice and middle rice were soaked with 10% soaking seed Ling 1 ml plus 5 kg water and 3 kg seed soaking for 2 days or 25% imidamide EC 2000 mi 3000 times solution for 48 hours to directly accelerate germination and prevent rice blast and evil seedling disease. The seeds of middle and late rice and rice were sown with 40 grams of 10% aphid lice net wettable powder mixed with bud grain to prevent thrips and planthoppers in seedling fields. 2. 5 days before transplanting, super marriage medicine was sprayed to prevent or reduce the occurrence of diseases and pests at tillering stage in the field. (1) early rice seedling field: spray 75% borer net EC 100 ml or 20% Jieqiangyu EC 200 ml per mu to prevent and reduce the occurrence of the first generation of Chilo suppressalis in the field; spray 75% plague loss wettable powder 60 grams or 20% tricyclazole powder 200 grams per mu to prevent field leaf blast. (2) medium rice seedling field: prevent Chilo suppressalis and leaf blast: spray 40% Chilo suppressalis EC 100 ml or 5% Regent suspension 60 ml per mu to prevent and reduce the occurrence of the first generation of Chilo suppressalis in the field; 60 grams of 75% blast loss wettable powder or 200 grams of 20% tricyclazole powder per mu to prevent field leaf blast. Spraying 10% aphid lice net wettable powder 40 grams per mu to prevent field rice planthopper and rice thrips. (3) late rice seedling field: spraying 40% borer net EC 100 ml or 20% Jieqiangyu EC 200 ml per mu to prevent and reduce the occurrence of field borer. 3. From tillering to booting stage, we should focus on the control of borer, and use mixed drugs to treat other diseases and insect pests. Early rice controls the first generation of Chilo suppressalis in mid-late May, using pesticides to control rice fields with a withered sheath rate of more than 8%, focusing on spraying leaf sheaths. During this period, leaf blast, especially central or acute disease spots, is found to be treated in a timely manner. Late rice was used to control Chilo suppressalis (Chilo suppressalis) or Chilo suppressalis (Chilo suppressalis) around August 10 or 15 days after planting. Jinggangmycin should be added to prevent sheath blight when controlling borer. 4. Mixed drugs were used to protect ear at the breaking and heading stage. Carry out the mixed use of drugs and the comprehensive management of a variety of diseases and pests. Early rice focuses on controlling panicle blast, sheath blight and rice planthopper; middle rice focuses on controlling stem borer and panicle blast, taking into account rice planthopper and sheath blight; late rice mainly controls stem borer, sheath blight and rice planthopper. Jinggangmycin should be added to control sheath blight at broken heading stage and tillering stage, aphids should also be added to rice planthopper-prone areas to control rice planthopper, rice false smut and susceptible varieties should be used to control rice planthopper in early heading stage (belly stage), and rice leaf borer should be used in the main falling area of rice longitudinal leaf borer in early rice heading stage, middle and late tillering stage to jointing and booting stage. 5. The harvesting period should be carried out, and the early rice and middle rice should be ploughed and retted in time.