5种药剂防治柳蚜的效果试验

Study on the Effects of Five Medicaments against Aphis farinosa

选用5种药剂防治柳蚜的试验结果表明,申农(2.5%乐氰乳油)3000倍液、4.5%高效氯氰菊酯乳油3000倍液树冠喷雾,防治效果最佳,喷药后2d的校正防效分别为96.5%和97.1%,喷药后7d的校正防效分别为99.6%和100%;其次是2.5%好乐士2500倍液、绿富隆乳油2500倍液,树冠喷药后7d的校正防效分别为95.7%和97.9%,这4种药剂均可作为防治柳蚜的替换药剂。

The effects of 5 medicaments against Aphis farinosa were studied in this paper. The resuhs showed that 2.5% dimethoate fenvalerafe emulsion liquid and 4.5% beta-cypermethrin with 1：3000 dilution had the best effect against Aphis farinose. The correction control effects were 96.5% and 97.1% after 2 days, respectively. The highest correction control effect of 99.6% and 100% after 7 days were observed, respectively. 2.5% cyhalothrin and saoshem imidacloprid EC with 1：2500 dilution whose correction control effects were 95.7% and 97.9%,respectively,also had a good effect against Aphis farinose. As a results,these 4 medicaments could be rotational used for preventing Aphis farinose.