利用天敌防治刺吸式口器害虫初探

Probe into the Control of Insect with Sucking Mouthpart by Using Natural Enemy

在受害的植物或作物上随机抽取若干受害叶片,统计蚜虫数量,一部分接入天敌,另一部分做对照,几天后观察蚜虫死亡情况。室内试验与大棚试验的结果均表明蒲螨防治刺吸式口器害虫的效果很好。由于大棚或室外试验中蒲螨繁育体丢失使蒲螨数量大幅减少,蚜虫数量会重新上升。提高防治效果的关键是蒲螨繁育体不被丢失以及提高蒲螨的分散性。

Some injured leaves were randomly selected from injured plants or crops for counting the number of aphid.The natural enemy was put in part of aphids,another part of aphids was compared.The aphid mortaility was observed after a few days.The results of green house test and laboratory test show that the effect of the control of insect with sucking mouthpart by using pyemotes was excellent.However,the losing of aphid＇s breeding body in green house test and laboratory test made the number of aphid be reduced greatly and the number of aphid be increased again.The key to improve the control effect is to avoid aphid＇s breeding body from being lost and improve aphid＇s dispersion.