通过田间采集病株标本、室内人工接种、大田病情调查等方法，对小麦纹枯病菌和水稻纹枯病菌侵染小麦作了初步研究。结果表明，小麦纹枯病菌是导致小麦纹枯病的优势种，水稻纹枯病菌虽然可以侵染小麦，但致病力弱。前茬为水稻或旱作物对小麦纹枯病的发生没有显著影响 Through the field collection of diseased specimens, indoor artificial inoculation, field investigation and other methods, the wheat Rhizoctonia cerealis and Rhizoctonia solani infection of wheat were initially studied. The results showed that R. solani was the dominant species causing wheat sheath blight. Rhizoctonia solani could infect wheat, but its pathogenicity was weak. Crops had no significant effect on the occurrence of wheat sheath blight in paddy or dry crops