水稻黑粉病防治技术水稻生育后期病害以穗茎瘟、纹枯病、稻曲病、粒黑粉病为主，尤以粒黑粉病发生较为普遍。据调查，吉林省水稻粒黑粉病一般株发病率在２０％～３０％，粒发病率５％～１０％。影响籽粒成熟，空秕粒增加，造成减产。在防治上应采取以下措施：１．用４０％... Rice powdery mildew prevention and control technology Rice late growth disease stems and blight, sheath blight, rice false smut, grain powdery mildew, especially in the occurrence of powdery mildew is more common. According to the survey, the average incidence of rice grain powdery mildew in Jilin Province is between 20% and 30%, and the incidence of grain is between 5% and 10%. Affect the grain maturity, empty grains increase, resulting in reduced production. In the prevention and control should take the following measures: 1. With 40% ...