近年来 ,纹枯病已上升为水稻主要病害 ,它有４大特点 :①是发生面广。②是抗纹枯病品种极少。③是危害程度日益严重。④是先由稻株下部隐蔽发生。因此 ,防治好水稻纹枯病是夺取粮食高产的关键 ,具体措施如下 :一、打捞菌核纹枯病主要靠菌核在田里越冬 ,越冬菌核经过冬春到早稻 In recent years, sheath blight has risen to the major diseases of rice, it has 4 major characteristics: ① is a wide range of occurrence. ② is very few resistant varieties of blight. ③ is the degree of harm is worsening. ④ is the first hidden by the lower part of the rice plant occurred. Therefore, the prevention and control of rice sheath blight is the key to winning high grain yield, the specific measures are as follows: First, the salvage sclerotiorum depends mainly on sclerotinia wintering in the field, overwintering sclerotium after winter and spring to early rice