7种杀菌剂对设施黄瓜霜霉病的药效比较

[目的]评价7种杀菌剂对设施黄瓜霜霉病的药效,为其生产应用提供参考。[方法]通过田间试验研究了7种杀菌剂对江苏里下河地区设施黄瓜霜霉病的防治效果。[结果]7种杀菌剂对黄瓜霜霉病均有一定防治效果,其中72%霜脲.锰锌和36%霜脲.百菌清防效最高且持效期长,药后5 d防效分别为90.03%和92.07%,药后10 d防效分别为75.31%和77.63%;其次为恶霜.锰锌和丙森锌。[结论]生产应用中可首选霜脲.锰锌和霜脲.百菌清,同时注意与恶霜.锰锌、百菌清、丙森锌、代森锰锌和甲霜灵等药剂交替轮换使用,以防抗药性产生与发展。

Comparison on Control Efficacy of Seven Fungicides against Cucumber Downy Mildew of Protective Area

[Objective] The aim was to evaluate the control Efficacies of seven fungicides against cucumber downy mildew of protective area.[Method]The control efficacies of seven fungicides against cucumber downy mildew in Lixiahe Region of Jiangsu Province were tested through field experiment.[Result] The seven fungicides all had certain control effect on cucumber downy mildew,among them 72% Cymoxanil.mancozeb WP and 36% Cymoxanil.chlorothalonil WP had the highest and longest control efficacy which were 90.03% and 92.07% after five days and 75.31% and 77.63% after ten days,respectively.Next came Sandofan.mancozeb and Iprovalicarb.[Conclusion]Cymoxanil.chlorothalonil and Cymoxanil.mancozeb might be the best choice for cucumber downy mildew control in the field in Lixiahe Region of Jiangsu Province,meanwhile Sandofan.mancozeb,Iprovalicarb,Chlorothalonil,Metalaxyl and Mancozeb could be applied together so as to control resistance.