摘要
通过应用白僵菌粉与 4种浓度溴氰菊酯粉混合后不同时间孢子萌发情况测定 ,以及用纯菌粉、药粉和菌药不同比例混合粉 ,对马尾松毛虫室内毒力测定和林间防治试验比较 ,筛选出菌粉与 0 .0 5 %溴氰菊酯粉按 4∶ 1比例混合 ,防治效果最好 ,并经大面积推广防治示范 ,平均防治效果达 95 %以上 ,分别较纯菌粉和药粉效果提高 14 .9%和 2 9.5 % ,具有明显的增效作用 ,马尾松毛虫死亡高峰期提前 5 - 7天 ,减少松针损失量 ,能及时控制住高虫口林分害虫的严重危害 ,经济。
The experiments of the germinative capability of the Beauveria bassiana spores in different time were done through applying the mixed powder of Beauveria bassiana and four different concentration of Deltamethrin. And the indoor virulent mensurations to Dendrolimus punctatus through applying pure powder, Deltamethrin and the different proportional mixed powder were tested, with the comparative experiments of the effect in the forest. According to the above experimental results, the best proportion 4∶1 of Beauveria bassiana and 0.05% Deltamethrin was obtained. The average effect is up to 95% while applied in wide areas, which is 14.9% and 29.5% higher than just applying Beauveria bassiana and Deltamethrin respectively. The mixed powder has such obvious effect that the dead fastigium of Dendrolimus punctatus will be about five to seven days ahead of time and the losing of the pine leaves will reduce. The widely application of the mixed powder will has a good control to Dendrolimus punctatus and has outstanding benefit to economy, society and ecology.
出处
《华东昆虫学报》
2002年第1期95-100,共6页
Entomological Journal of East China
基金
福建省林业厅资助项目 (闽林科〔1997〕0 10号 )的部分研究内容
关键词
白僵菌
溴氰菊酯
防治
马尾松毛虫
混合粉剂
药效
Beauveria bassiana , Deltamethrin, mixture, Dendrorimus punctatus, effect
