通过 3年试验 ,筛选出对稻曲病防效较好的药剂有络氨铜、DT杀菌剂、CT杀菌剂 ,防效达 70 %左右 ,施药的适期在水稻孕穗末期破口前 5d左右 ,施药的有效次数为 1次 ,破口后施药药效不理想 ,且易产生药害 Through 3 years of experiment, we found out the best controlling agents against STD, including Cu, DT and CT fungicides. The control effect was about 70%. The optimum period of spraying was 5 days before the end of the booting stage of rice Or so, the effective number of pesticides for 1, after breaking the drug efficacy is not ideal, and prone to injury