稻瘟病是目前分布最广泛、危害最严重的植物真菌病害之一,我国几乎所有水稻栽培地区都有该病害的发生。目前稻瘟病的防治措施主要包括抗病品种选育、药剂防治和栽培管理。其中抗病品种多是基于“基因对基因”学说基础上的垂直抗性品种,容易丧失抗病性。化学防治具有经济、高效、方便、迅速等优点,一直是 Rice blast is one of the plant fungal diseases with the widest distribution and the most serious hazards at present. Almost all rice cultivation areas in China have the occurrence of this disease. At present, the prevention and control measures of rice blast mainly include selection of resistant varieties, control of pesticides and cultivation and management. Among them, most of the resistant varieties are vertical resistant varieties based on the “gene-to-gene” theory, which is easy to lose their disease resistance. Chemical control has the advantages of economy, efficiency, convenience, rapidity and so on