水稻纹枯病是水稻上发生面最广、为害最重的常发性病害。防治水稻纹枯病，除抓好打捞浪渣、合理施肥、适时适度晒田等措施外，还必须实施药剂防治。水稻效枯病在田间的发生发展有两个重要阶段。第一阶段在拔节孕穗前，病情主要呈横向发展，即增加发病完数和发病株数。第二阶段 Rice sheath blight is one of the most common and damaging diseases in rice. Prevention and control of rice sheath blight, in addition to do a good job of salvage of slag, reasonable fertilization, timely and appropriate Shaotian other measures, but also the implementation of pharmaceutical control. The development of rice leaf blight in the field has two important stages. The first stage before the jointing booting panicle, the disease was mainly horizontal development, that is, increase the incidence of the end and the number of cases. second stage