恶苗病是水稻常见的病害之一,我国主要稻区均有不同程度发生,我地的农民常称恶苗病为“米秧”。过去发病少,零星发生,常常不被人们所重视,近年来面积扩大,已成为我地区一种主要病害。1989年我处大发生,有些秧苗、本田发生面占30％,在水阳卫东等处调查最高发病田块高达40％以上,严重威胁着水稻生产。 一、发生特点 Bakanae is one of the most common diseases in rice. The main rice growing areas of our country all have different degrees of occurrence. My local farmers often call it “rice seedling”. In the past, the incidence of disease was small and sporadic and was often not taken seriously by people. In recent years, the area has expanded and it has become a major disease in our region. In 1989, my office took place. Some seedlings and Honda took up 30% of the total surface area. In the case of Shuiyang Weidong, the highest incidence of up to 40% was investigated, which seriously threatened rice production. First, the occurrence of characteristics