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小麦纹枯病发生地域分布广泛,几乎遍及世界各温带小麦种植地区。我国长江流域、黄淮平原及华北麦区各省均有发生。20世纪80年代以来,随着小麦高产栽培技术措施的推广,该病发生渐进加重,目前已成为安徽、江苏、河南、山东、河北等小麦主产省份的主要病害之一。小麦纹枯病从播种至生长后期均可发病。该病主要危害植株基部的叶鞘和茎秆,形成边缘浅褐色、中间灰白色的椭圆形或不规则云纹斑.
Wheat sheath blight occurred in a wide range of geographical distribution, almost all over the world temperate wheat growing areas. China’s Yangtze River Basin, Huanghuai Plain and North China wheat provinces have occurred. Since the 1980s, with the popularization of high-yielding cultivation techniques of wheat, the disease has gradually increased, and now it has become one of the main diseases in major wheat-producing provinces such as Anhui, Jiangsu, Henan, Shandong and Hebei. Wheat sheath blight can be disease from sowing to late growth stage. The disease mainly endangered leaf sheaths and stems at the base of plants, forming a light brown beige edge with an oval or irregular moire spot in the middle.