60%吡蚜酮·氯虫苯甲酰胺水分散粒剂对烟草蚜虫和烟青虫的田间防治效果

Control Effect of Pymetrozine·Chlorantraniliprole 60% WG on Myzus persicae and Helicoverpa assulta of Tobacco

[目的]明确60%吡蚜酮·氯虫苯甲酰胺水分散粒剂对烟田烟蚜和烟青虫的最佳使用剂量和防治效果。[方法]采用喷雾法进行了田间药效试验。[结果] 60%吡蚜酮·氯虫苯甲酰胺水分散粒剂对烟蚜和烟青虫防治效果良好,试验剂量54、72、90 g a.i./hm^2处理在第7天对烟蚜和烟青虫的防效分别为90.58%～94.05%、90.85%～93.81%。[结论] 60%吡蚜酮·氯虫苯甲酰胺水分散粒剂是防治烟蚜和烟青虫的理想药剂,且对作物安全,建议在烟蚜发生初期或烟青虫幼虫3龄前使用54～90 g a.i./hm^2喷雾为宜。

[Aims] This paper aims to study the optimum dosage and control effect of pymetrozine·chlorantraniliprole60% WG on Myzus persicae and Helicoverpa assulta. [Methods] The field trial was conducted by routine spraying method. [Results] The results showed that pymetrozine·chlorantraniliprole 60% WG could effectively control M.persicae and H. assulta, the field efficacy for M. persicae and H. assulta was 90.58-94.05% and 90.85-93.81% on 7th day after treatment. [Conclusions] Pymetrozine·chlorantraniliprole 60% WG was an ideal agent to control M.persicae and H. assulta, it was recommended that it could be applied at 54-90 g a.i./ha by foliar spray when the larva of M. persicae or H. assulta primary occur.