稻粒黑粉病是杂交稻制种生产后期的重要病害，不仅造成大幅度减产，而且还会严重影响种子的质量和商品品质。其综合防治技术措施如下：１　合理安排父母本播差期。稻粒黑粉病主要发生在水稻扬花期，此时天气条件好坏在很大程度上决定了发病的轻重。因此，把制种花期安排在日照 Rice powdery mildew is an important disease of hybrid rice seed production late, not only caused a substantial reduction in production, but also seriously affect the quality of seeds and product quality. The comprehensive prevention and treatment of technical measures are as follows: 1 Reasonable arrangements for parents of the broadcast period. Rice powdery mildew occurs mainly in the flowering stage of rice, when the weather conditions are good or bad to a large extent determine the severity of the disease. Therefore, the flowering arrangements in the sunshine