What are the common diseases and insect pests of rice?

What are the common diseases and insect pests of rice? How to prevent and cure? Rice growers are also asked to help introduce nearly half of the world's population, all of which feed on rice, but rice cultivation is often harmed by rice blast, white leaf blight, bacterial leaf spot, sheath blight, rice false smut, rice planthopper and rice stem borer, so the planting network collates the control methods of the above rice diseases, which are listed in detail for netizens' reference. 1. Control methods of rice blast: 1. Control of rice leaf blast: when disease spots appear in the field, 100 grams of 20% tricyclazole wettable powder is sprayed with 45 kg of water; 15 ml of clean seedling EC is sprayed with 45 kg of water; 50% thiazole 200 kg 250 ml / mu, twice, once every 5 to 7 days. 2. Prevention and control of rice panicle blast: the best time to control rice blast is the breaking stage, and the medicament selection is: 75% tricyclazole wettable powder with 30 grams per mu, or 40% Fuji No. 1 EC with 150 ml per mu; one of the two agents is sprayed with 45 kilograms of water, even for three times, once every 5 to 7 days. Second, the control method of rice white leaf blight and bacterial leaf spot: when the disease spot appears in the field, apply immediately to control, medicament selection: 25% Chuanhua 018 wettable powder 100 grams per mu, 45 kg of water spray control; or use agricultural streptomycin per mu with 2 packets of water 45 kg spray control. Third, the control method of rice sheath blight: the best time for control is booting stage. Medicament selection: Jinggangmycin 2 packets per mu of rice, spray control with 45 kg water, or spray control with 75% rice Quwangkuling wettable powder 40 grams per mu and 45 kg water; at the same time, 30% clean seedling EC 20 ml mixed with water 45 kg spray control. Fourth, the control methods of rice false smut: Rice false smut mainly occurs in the late growth stage, the control period should grasp the booting stage or heading stage, medicament selection: (1) Jinggangmycin 2 package with 15% strychnine 100 grams, 45 kg water spray control; (2) 30% clean seedling EC 25ml mixed with water 45kg spray control. (3) 70% Nasjin WP is sprayed with 40 grams of water and 45 kilograms of water per mu. 5. control methods of rice planthopper: Rice planthopper mainly lives at the base of rice bushes and absorbs plant juice to yellowing rice plants and affecting yield. Control agents can be selected as follows: 25% Youlode wettable powder 30 grams per mu; or 25% aldicarb wettable powder 100 grams per mu, 45 kg water spray control; you can also use 20% aphid mu EC with 100 ml water 45 kg spray control. It can also be controlled by spraying 30 g / mu of imidacloprid or 10% imidacloprid with 45 kg water. 6. control methods of rice borer: Rice borer causes withered heart or white ear after harming rice, and control agents are selected: using 98% Badan powder per mu of rice with 30 grams of fine soil and 25 kilograms of sprinkler; or using 50% wettable powder of rice borer to spray with 80 grams of water and 45 kilograms of water per mu; at the same time, we can also use 25% quinathion EC 150ml mixed with water 45kg spray control. How to disinfect rice seeds to see whether rice seeds are infected or not