稻粒黑粉病是水稻的常发病害之一,近年在巢湖市发生呈加重趋势,发生品种主要集中为杂交籼稻和杂交籼稻制种田的母本。杂交籼稻制种常年因此病减产10%～25%,重发年份减产30%以 Rice powdery mildew is one of the most common diseases in rice. In recent years, it has been aggravating in Chaohu City. The main occurrences of the disease are hybrid indica rice and female parent of hybrid indica rice. Indica hybrid rice annual perennial disease reduction of 10% to 25%, redress the year to cut 30%