克瘟散为黄褐色油状液体,具有蒜的臭味,遇碱或强酸易分解失效,对人、畜有中等毒性。常用剂型为40％克瘟散乳剂、2％克瘟散粉剂。克瘟散对植物有保护作用并有一定的内吸治疗作用。对病菌有较强的触杀作用。其主要用于防治稻瘟病。在稻瘟病的发病初期,可用40％乳剂600～800倍液进行喷洒。如果病情有发展,每隔7天左右进行第二次、第三次喷药。防治水稻 K blast was scattered brown oily liquid, with the smell of garlic, case of alkali or strong acid decomposition failure, to humans, animals have moderate toxicity. Commonly used dosage form is 40% grams blast powder emulsion, 2% grams blast powder. Ke blast has protective effect on plants and has certain internal absorption and therapeutic effect. The bacteria have a strong contact role. It is mainly used for controlling rice blast. Blast disease in the early stages, available 40% emulsion 600 to 800 times the spray. If the disease develops, the second and third sprays will take place every seven days or so. Control rice