球孢白僵菌防治雷竹食叶螟试验

在雷竹食叶螟幼虫发生期的 6月 中旬~7月 中旬,施用球孢白僵菌对雷竹食叶螟幼虫能取得较好的防治效果,幼 虫死亡率达到 60%~100%,与化学农药混合使用能快速杀灭幼虫并使其白僵化 。试验表明,使用白僵菌后第 2年笋期竹 笋蝇、竹笋夜蛾等笋期害虫的危害程度减轻 。该试验为生物防治雷竹害虫,生产绿色竹笋产品,减少化学农药使用对环境 的污染,提供了实践数据。

Experiments on Beauveria bassiana controlling coclebotyscoclesaliswhich Infesting phyllostachyspraecox

Applying Beauveria bassiana to control the larvae of coclebotys coclesalis which infesting phyllostachys prae- cox from mid-June to mid-July, the larvae infection mortality rate was up to 60%~100%, and B. bassiana combined with chemical pesticides could kill the larvae quickly and make the larvae ossified. It was found through the experiment that the appalments of B. bassiana reduced the damage degree of the bamboo shoot pests such as the bamboo shoot fly and the bamboo shoot night moth in the second year . The experiment provided practical data for biological pest control, produc- tion of green bamboo shoots, and reduction of environmental pollution caused by chemical pesticides .