小麦纹枯病是由立枯丝核菌侵染引起的一种病害,在江苏、浙江、安徽、湖北等省都有发生。近年来,在苏南地区的一些推广品种上为害较重,已成为小麦生产上的一个新问题。一、发生情况据1979年我所调查,大田种植的宁麦3号和镇7630,病株率分别为54.5—89.6%及98.7%。1981年在武进等县调查397块小麦,平均病株率25.7%。 Wheat sheath blight is caused by Rhizoctonia solani infection of a disease, in Jiangsu, Zhejiang, Anhui, Hubei and other provinces have occurred. In recent years, some varieties of popularization in southern Jiangsu have been seriously harmed and have become a new issue in wheat production. First, the occurrence According to my investigation in 1979, the field planted Ningmai 3 and 7630, the diseased plants were 54.5-89.6% and 98.7%. In 1981, 397 pieces of wheat were investigated in Wujin counties with an average diseased plant rate of 25.7%.