近年来,玉米大斑病、小斑病发生面积不断扩大,发病程度逐年加重,防治这两种病害的农药市场显现商机,国内外农药企业都盯上了这块“肥肉”。随着玉米种植面积不断扩大,主裁品种抗病性弱,加上高密度种植、水肥管理不当等多种因素叠加,导致玉米大斑病、小斑病发生逐年加重。目前防治玉米大斑病的传统药剂以 In recent years, there has been an expanding area of ​​spotted leaf spot and small spot disease of maize and the incidence has been increasing year by year. The pesticide market for preventing these two diseases has shown a business opportunity. Pesticide enterprises at home and abroad are eyeing this piece of “fat meat.” With the continuous expansion of corn planting area, referee varieties resistant to disease, coupled with high-density planting, improper management of water and fertilizer and other factors superimposed, leading to maize leaf spot disease, leaf spot disease year by year aggravating. At present, the traditional medicine to prevent corn leaf spot