小麦纹枯病是一种以土壤为主进行传播的真菌性病害。近年来随着种植制度的改革 ,高产品种的推广和水、肥、密度的增加 ,为害日势严重。山东省 1 998年发病率高达 78.3 %,一般病田减产 9%～ 1 0 %,严重地块可减产 85%以上。目前生产上防治小麦纹枯病沿用井冈霉素等少数几种传统 Wheat sheath blight is a fungal disease spread mainly by soil. In recent years, with the reform of the planting system, the promotion of high-yielding varieties and the increase of water, fertilizer and density, the harm is serious. In 1998, the morbidity rate of Shandong Province was as high as 78.3%, and the yield of general disease fields was reduced from 9% to 10%. In severe land areas, the yield could be reduced by over 85%. The current production of wheat sheath blight along the Jinggangmycin along with a few other traditional