诸暨市近年茭白种植面积稳定在666.7hm2左右,种植的多为单季茭,品种以八月茭为主。茭白胡麻斑病在茭白种植面积扩大之后已成为主要病害之一,一般田块产量损失10%～20%,严重田块减产50%以上。为有效控制此病,笔者近几年在田间开展了此病的消长动态观察及防治方法探讨。1发生为害 In recent years, Zhuji City, white planted area stabilized at about 666.7hm2, mostly monoculture, the main varieties in August.茭 White flax spot disease has become one of the main diseases after the white planted area has been expanded. Generally, the yield of field flats is 10% -20%, and the yield of serious flats is more than 50%. In order to effectively control the disease, in recent years, I carried out in the field of dynamic observation of the disease growth and prevention and prevention methods. 1 is harmful