钻孔注射40％氧化乐果防治黄刺蛾

Control of Cnidocampa flavescens by Injecting Omethoate 40 EC into Trunk.

将４０％氧化乐果乳油原液注入受黄刺蛾危害的法国梧桐主干，防治效果达８３．９％以上，获理想效果。黄刺蛾幼虫死亡高峰在注药后第４天到第６天。

Control of Cnidocamp flavescens was made at the larval stage by injecting omethoate 4 0EC into the holes bored in the trunk of Platanus orien- talis, resulting in more than 83.9% of the larvae being killed, having a dead peak of the larvae in the fourth day to the sixth day after injection.