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大生M45是美国罗门哈斯公司研制生产的高效广谱低毒杀菌剂,在全国各地大面积用于防治果树、蔬菜多种病害,均取得显著防效。为明确其对苹果斑点落叶病、轮纹病、炭疽病的实际防效,于1997年对苹果主要病害进行了系统田间药效试验、对三种病害病原菌进行了毒力测定和接菌条件下大生M45防治三种病害的效果,以验证田间药效和指导适期喷药提供依据。
Dasheng M45 is developed and produced by the United States Rohm and Haas Company, a broad-spectrum low-toxic bactericide. It has achieved significant prevention and control over a large area throughout the country for the prevention and control of various diseases of fruit trees and vegetables. In order to clarify its actual control effect on apple spotted leaf rot disease, ring rot disease and anthracnose, the main disease of apple was systematically tested in field in 1997. The pathogenic bacteria of three diseases were tested under virulence and inoculation conditions Health M45 three kinds of disease prevention and control of the disease in order to verify field efficacy and guidance to provide the basis for spraying.