40%三苯基氢氧化锡SC防治马铃薯晚疫病田间药效试验

Experiment on Control Phytophthora infestans with 40% Triphenytin Hydroxide SC

采用田间小区试验的方法，测定40％三苯基氢氧化锡SC叶面喷雾防治马铃薯晚疫病的效果，试验结果表明，40％三苯基氢氧化锡SC对马铃薯晚疫病有较好的防治效果，有效剂量825～975g·hm^-2，防效达75．39％～77．94％，极显著优于对照药剂75％百菌清WP，生产中可以选用该药剂与其他药剂交替轮换应用。

The control effect of 40% Triphenytin Hydroxide SC on Phytophthora infestans was studied by the method of plot test field. The result showed that the effects of 40% Triphenytin Hydroxide SC effect dosage was 825 - 975g（ a. i） ha^-1. Control effect of Phytophthora infestans are 75.39% - 77.94%. It＇ s most significantly with 75% Chlorothalonil WP. It can be applied replace as an new fungicide with other common fungicides.