稻瘟病、白叶枯病和纹枯病是影响水稻生产最大的三大病害。在防治策略上 ,对稻瘟病、白叶枯病要以种植抗病品种为主 ,协调栽培管理技术和药剂防治 ,而纹枯病应侧重于水控药治。1 )选用抗病品种。选用抗病品种是防治稻瘟病、白叶枯病最经济有效的措施。要在当地农业技术部门的指 Rice blast, bacterial leaf blight and sheath blight are the three major diseases affecting rice production. In the prevention and control strategy, blast disease, bacterial blight should be cultivated resistant varieties, coordination of cultivation and management techniques and pharmaceutical control, and sheath blight should focus on water control medicine. 1) Selection of disease-resistant varieties. The selection of resistant varieties is the most economical and effective measure to control rice blast and bacterial leaf blight. To refer to the local agricultural technology department