受美国罗门哈斯公司的委托，对提供的８０％ＷＰ大生 Ｍ－４５进行防治柑桔溃疡病的田间药效试验。现将结果报告如下。１材料与方法１．１供试药剂８０％ＷＰ大生Ｍ－４５系美国罗门哈斯公司提供；对照药剂有７７％可杀得（２０００型）系美国固信公司产品；农用链霉素（ １０ Entrusted by the Rohm and Haas Company in the United States, 80% of WP WP M-45 was provided for the field efficacy test of citrus canker. The results reported below. 1 Materials and methods 1.1 The test agent 80% WP Dasheng M-45 Department of the United States Rohm and Haas Company; 77% of the control agent can kill (2000) Department of the United States solid letter company products; agricultural streptomycin 10