不同药剂对水木坚蚧防治效果

摘要

为探索广玉兰水木坚蚧防治方法，本文设计13个处理对广玉兰水木坚蚧化学药剂喷雾试验，不同处理后14天后调查统计分析，蚧必治800倍液、蚧必治600倍液、吡虫啉400倍液、蚧必治与阿维菌素(3∶2)复配剂防治效果明显较好，死亡率分别是99．21%、96．94%、88．92%、95．73%，防治效果分别是99．09%、96．49%、87．33%、95．11%。在蚧必治内添加阿维菌素对广玉兰水木坚蚧防治效果具有促进作用。%To explore the prevention methods of Parthenolecanium corni Bouche, a total of 13 pesticide treat-ments were currently carried out by spray in Magnolia grandiflora. The results showed that chlorpyrifos (800 × dilution) , chlorpyrifos (600 × dilution) , chlorpyrifos (400 × dilution) , and the mixture of chlorpyrifos and avermectins (3∶2 v/v) gave the better effects, and their mortalities was 99. 21%, 96. 94%, 88. 92%, and 95. 73%, respectively, correspondingly, their control effect was 99. 09%, 96. 49%, 87. 33%, and 95. 11%, respectively. Therefore, the addition of avermectins to chlorpyrifos might considerably elevate the prevention efficiency to Magnolia grandiflora.