水稻白叶枯病是水稻主要病害之一。由于现行品种的抗性弱;病菌类型分化,致病力强的菌株陆续出现;推广的抗病品种,抗性逐渐丧失等原因,致使水稻发病面积不断扩大。因此,积极发掘抗白叶枯病强的水稻抗源,对选育抗病品种,减轻水稻白叶枯病的为害具有重要的意义。本项工作是在鉴定大量育种材料的基础上,择其中抗性强的组合后代,经多年连续鉴定,选抗汰感,把抗病力强、生育期适中和丰产性状好的品系筛选出来,供有关部门 Rice bacterial leaf blight is one of the main diseases of rice. Due to the weak resistance of the current varieties; the differentiation of pathogenic bacteria and the emergence of strong pathogenic strains; the promotion of resistant varieties, the gradual loss of resistance and other reasons, resulting in the continuous expansion of the area of ​​rice disease. Therefore, active exploration of anti-bacterial blight resistance in rice is of great significance for breeding resistant varieties and alleviating the damage caused by bacterial leaf blight in rice. This work is based on the identification of a large number of breeding materials, select one of the combination of strong resistance offspring, after years of continuous identification, selection of anti-elimination, the resistance to disease, moderate growth and high yield traits selected lines, For the relevant departments