水稻白叶枯病菌系研究是抗原亲本筛选、抗病品种选育和合理布局的重要基础工作.国外,日本早在1957年就因“朝风”品种丧失抗病性,从而开始研究这个问题,并先后于1969、1974年将白叶枯病菌划分为三和五个菌系群.菲律宾始于1963年研究,分成四个菌群;国内,1970年后,江苏、云南、湖北等省陆续开始研究,均有过报道.为了探明我省水稻白叶枯病的致病菌群及其分布情况,1980年至1982进行了本项研究工作. The study on bacterial blight of rice is an important basic work of screening of antigens, breeding of resistant varieties and rational distribution.Overseas, Japan began to study this problem as early as 1957 because of the loss of disease resistance of “Asahi” And successively divided the bacterial blight bacteria into three and five bacterial strains in 1969 and 1974. The Philippines began its research in 1963 and was divided into four groups of bacteria. In China and after 1970, Jiangsu, Yunnan and Hubei provinces began to gradually start Research, have been reported.In order to ascertain the province of rice bacterial blight pathogenic bacteria and their distribution, from 1980 to 1982 conducted the research work.