白粉病是黄瓜栽培中的常见病害,具有潜伏期短、再侵染频繁、流行性强等特点。使用杀菌剂是日前防治该病的重要手段之一,但随着药剂的长期、大量使用,病菌对一些药产生了不同程度的抗性,导致防效下降。为验证新型杀菌剂42.8%氟菌·肟菌酯悬浮剂(含氟吡菌酰胺和肟菌酯各21.4%)对黄瓜白粉病的防效,笔者以75%肟菌·戊唑醇水分散粒剂和30%醚菌·啶酰菌悬浮剂为对照,进行田间药效试验。试验数据显示,用药前各处理区黄 Powdery mildew is a common disease in cucumber cultivation, with a short incubation period, frequent re-infection, epidemic and so on. The use of bactericides is one of the most important measures to prevent and treat the disease. However, with the long-term and extensive use of pesticides, the bacterium has some degree of resistance to some drugs, resulting in a decrease in control efficacy. In order to verify the control efficacy of 42.8% fluorostrobin and trifloxystrobin suspension (21.4% each of fluopyram and trifloxystrobin) on cucumber powdery mildew, the author used 75% oxime / tebuconazole water dispersible granules Agent and 30% ether bacilus naringin suspension as a control, the field efficacy test. Experimental data show that the treatment area before treatment yellow