小麦纹枯病又称立枯病、尖眼点病,发病早的小麦田减产20%～40%,降低小麦成穗率、穗粒数和千粒重,严重危害田块形成枯株白穗甚至颗粒无收。小麦各个生育期均可受害,发病高峰在穗期,主要危害植株基部的叶鞘和茎秆,造成烂芽、病苗死苗、花秆烂茎、倒伏、枯孕穗等多种症状。 Wheat sheath blight, also known as blight, pointed point disease, the early onset of wheat yield reduction of 20% to 40%, reducing the rate of earning of wheat, grains per spike and 1000-grain weight, seriously damaging the formation of white blight or even grain No admission. Wheat may suffer in all its growth stages. The peak of its occurrence is at the heading stage, which mainly harms the leaf sheath and stem at the base of the plant, resulting in many symptoms such as rotting buds, dead seedlings of disease and disease, rotten stalks of stems, lodging and booting.