稻粒黑粉病又名墨黑穗病。以前在水稻上是一种少见而轻微的病害。近年来,危害逐渐加重,对杂交稻,特别是杂交稻的制种,造成了较大的损失。1982-1984年杂交稻制种田,母本的病粒率一般为15.3%,高的达39.8%。杂交稻的病粒率一般为0.14%,高的为2.04%。为此,对该病的发生规律及有效的 Rice powdery mildew, also known as inkhead disease. Previously a rare and minor disease on rice. In recent years, the harm gradually increased, resulting in a greater loss of seed production of hybrid rice, especially hybrid rice. 1982-2984 hybrid rice farming, the mother of the sick grain rate is generally 15.3%, up to 39.8%. The disease rate of hybrid rice is generally 0.14%, high 2.04%. To this end, the occurrence of the disease rules and effective