25%嘧菌酯悬浮剂对黄瓜霜霉病的防效研究(英文)

[目的]研究25%嘧菌酯悬浮剂对黄瓜霜霉病的防效。[方法]试验设空白对照和25%嘧菌酯悬浮剂450、600、750 g/hm2以及80%代森锰锌可湿性粉剂300 g/hm2 5个处理,于2012、2013连续2年开展了25%嘧菌酯悬浮剂防治黄瓜霜霉病田间药效试验。[结果]25%嘧菌酯悬浮剂对黄瓜霜霉病有较高的防治效果,其防效为70.0%~83.6%,使用时推荐剂量为25%嘧菌酯悬浮剂600 g/hm2,于黄瓜霜霉病发病前或初开始喷药,间隔7 d喷一次药,共喷药3次。[结论]该研究可为25%嘧菌酯悬浮剂在生产上的推广应用提供理论依据。

Prevention of 25% Azoxystrobin Suspending Agent to Cucumber Downy Mildew

[Objective] The aim was to research prevention effects of 25％ azoxys trobin suspending agent to cucumber downy mildew.[Method] The test,including control group and four treatment groups with 450,600,and 750 g/hm2 25％ azoxystrobin suspending agents,and 80％ mancozeb wettable powder,was carried out in 2012 and 2013 consecutively to test the prevention effects of 25％ azoxystrobin suspending agent to cucumber downy mildew.[Result] The prevention effects were significant of 25％ azoxystrobin suspending agent to cucumber downy mildew in the range of 70.0％-83.6％,and it is recommended 25％ azoxystrobin suspending agent at 600 g/hm2 be spread before plants diseased or in initial stage.In the whole stage,it was spread once every 7 d,totaling 3 times.[Conclusion] The research provides references for wide application of 25％ azoxystrobin suspending agent in production.