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通过田间试验,分别调查了42.8%氟菌·肟菌酯悬浮剂、30%醚菌·啶酰菌悬浮剂、250 g/L吡唑醚菌酯乳油、75%肟菌·戊唑醇水分散粒剂4种高效、低毒、低残留农药和对照药剂50%醚菌酯水分散粒剂对黄瓜白粉病的防治效果。以上5种药剂处理的末次药后防效依次为75.78%、72.68%、60.49%、51.98%和11.06%,4种供试药剂的防效均显著优于对照药剂50%醚菌酯水分散粒剂。结合3次施药防治后各处理区黄瓜白粉病病情指数的变化还发现,42.8%氟菌·肟菌酯悬浮剂和30%醚菌·啶酰菌悬浮剂防治该病的速效性和持效性明显优于其他供试药剂。
Through field experiments, 42.8% of fluticasone-trifloxystrobin suspension, 30% of bacteriocidal bacilovilas suspending agent, 250 g / L of pyraclostrobin EC, 75% Controlling effect of four kinds of high efficiency, low toxicity, low residual pesticide and control agent 50% Ket albus bacteria water dispersible granule on cucumber powdery mildew. The control efficacy of the above five agents was 75.78%, 72.68%, 60.49%, 51.98% and 11.06%, respectively. The control efficacy of the four tested agents was significantly better than that of the control agent 50% Agent. Combining the changes of disease index of cucumber powdery mildew in each treatment area after three times of application of pesticides, it was also found that 42.8% of fluorfenamicin and trifloxystrobin suspension and 30% Obviously better than other test agents.