为有效地控制小麦叶锈病流行,贯彻预防为主的方针,1975—1987年对河北省小麦叶锈菌生理小种动态进行了研究,为河北省选育和利用抗叶锈品种提出了科学依据.一、河北省小麦叶锈菌生理小种类型和年份变化:自1975—1987年共鉴定来自全省麦区317个品种上的693个叶锈菌标样,共鉴定出41个生理小种和一个对河北省小麦重要亲本洛夫林10号能致病的洛10小种群.常见频率在4%以上的优势小种有60(叶38)、160(叶9)、 In order to effectively control the wheat leaf rust epidemic and implement the principle of prevention, the dynamics of wheat leaf rust ecotypes in Hebei Province from 1975 to 1987 were studied, which provided a scientific basis for the breeding and utilization of leaf rust resistant varieties in Hebei Province First, the types and the annual variations of ecotypes of Puccinia triticina in Hebei Province: A total of 693 leaf rust index samples from 317 varieties in the wheat region of Hebei Province were identified from 1975 to 1987, and 41 physiological races And a small population of 10 Luo 10, which is pathogenic to Lovrin 10, an important wheat parent in Hebei Province, and 60 (leaves 38), 160 (leaves 9),