粉尘法施药防治保护地蔬菜病害,具有省工、省力、省药、不增加棚内湿度、防治效果明显等优点。在具体操作时须注意以下几点: 1.选择适宜的粉尘剂。防治黄瓜霜霉病、西红柿晚疫病可喷10%防霉灵或5%百菌清粉尘剂; Dust law pesticide application prevention and control of vegetable diseases, with labor, effort, medicine, not to increase the humidity inside the shed, prevention and treatment of obvious advantages. In the specific operation should pay attention to the following points: 1. Select the appropriate dust agent. Control of cucumber downy mildew, late blight tomatoes can spray 10% anti-mold spirit or 5% Chlorothalonil dust agent;