蛇床子素对茶尺蠖和假眼小绿叶蝉的控制效果评价

The Evaluation of Osthole忆s Control Efficacy on Tea Eometrid and Empoasca Vitis

[目的]探讨0.4%蛇床子素乳油对茶尺蠖和假眼小绿叶蝉的控制效果。[方法]采用0.4%蛇床子素乳油、0.3%印楝素乳油、2.5%鱼藤酮乳油等3种植物源农药与2%甲维盐乳油、20%啶虫脒可溶性液剂等2种化学农药进行田间药效对比试验。[结果]0.4%蛇床子素乳油6 g a.i./hm2药后7、10 d,对茶尺蠖的防效均在95%以上,对假眼小绿叶蝉的防效均在80%以上。[结论]0.4%蛇床子素乳油适用于防治茶尺蠖和假眼小绿叶蝉,可在无公害茶叶生产特别是有机茶生产中大力推广应用。

[Aims] The aim of this study is to investigate the osthole＇s control effects on tea geometrid and Empoasca vitis. [Methods] Field efficacy tests of osthole 0.4% EC, azadirachtin 0.3% EC and rotenone 2.5% EC, were carded out together with 2 kinds of chemical pesticides emamectin benzoate 2% EC and acetamiprid 20% SLX. [Results] On the seventh day and tenth day aider treatment, the efficacy of osthole 0.4% EC at 6 g a.i./ha against tea geometrid was above 95%, and the control effect on E. vitis was more than 80%. [Conclusions] Osthole 0.4% EC is suitable for controlling tea geometrid and E. vitis, and could be used extensively in tea nuisanless production, especially in organic tea production.