对采自我国和由美、加、日、捷、斯、阿（阿富汗）和前苏联引入的１８个种的披碱草，用我国小麦白粉病１１个生理小种的混合菌种进行接种，有１５个种接种成功。用１４份发病披碱草上产生的白粉病菌分别回接小麦，也全部回接成功，说明国外的披碱草和我国的一样具同源性，都属于我国小麦白粉病的寄主范围，具中间寄主传播病菌的潜力。对国外披碱草在疆域接壤的邻国间传播新小种等问题进行了讨论 Eighteen species of elytras grass collected from China and imported from the United States, Canada, Japan, Czech Republic, Sri Lanka, Afghanistan (Afghanistan) and the former Soviet Union were inoculated with a mixture of 11 race species of wheat powdery mildew 15 kinds of vaccination success. With 14 copies of the disease caused by Elymus powdery mildew were back to the wheat, but also all back to success, indicating that the same as the Eustacea and our country with homology, belong to the scope of the host of wheat powdery mildew in our country, with the middle The host has the potential to spread germs. The discussion on the issue of the propagation of new races among neighboring countries with neighboring borders of Elymus basalis was discussed