由于小麦多年连作,土壤有机质偏小,加之不利的天气影响,导致小麦根腐病逐年加重,已成为麦田主要病害之一。小麦根腐病是由半知菌类长蠕孢属真菌侵染而引起的一种真菌性病害。病菌潜伏在种子内和土壤中,随病株残体可存活1￣1.5年,小麦整个生育期均可发病,病菌初染危害小麦根部和 As a result of years of continuous cropping of wheat, soil organic matter is too small, combined with unfavorable weather, resulting in increased annual root rot of wheat, wheat has become one of the major diseases. Wheat root rot is a fungal disease caused by the infection of Helminthosporium fungi. Bacteria lurk in the seeds and the soil, with the disease can survive 1 to 1.5 years, the entire growing period of wheat disease can occur, the initial infection of wheat root and endanger the health