几种生物源农药对高架草莓叶螨和蚜虫的防治效果比较

叶螨和蚜虫是草莓生产中的重要害虫,为减少化学农药使用同时提高防治效果,本研究选择几种生物源农药对草莓叶螨和蚜虫进行防治效果比较。研究结果表明,对叶螨,1.8%阿维菌素微乳剂(ME)1400倍液防治效果最佳,药后7 d防治效果达81.15%,显著高于其他处理;2.5%鱼藤酮乳油(EC)600倍液防治效果最差,药后7 d防治效果为46.87%。对蚜虫,2.5%鱼藤酮EC 400倍液防治效果最佳,药后7 d防治效果达85.08%,1.3%苦参碱水剂(AS)1200倍液防治效果最差,药后7 d防治效果为62.75%。供试生物源药剂对草莓生长安全,无药害发生。在草莓生产中,可优先选择1.8%阿维菌素ME 1400倍液、2.5%鱼藤酮EC 400倍液分别对叶螨、蚜虫进行防治。

Comparison of control effects of several bio-pesticides against leaf mites and aphids on strawberry

Leaf mite and aphid are important pests in strawberry production. In order to reduce the use of chemical pesticides and improve the control effect, several bio-pesticides were selected to compare the control effect on mites and aphids. The results showed that the 1 400 times solution of abamectin 1.8% ME had the best control effect on the mites, with the efficacy of 81.15% seven days after application, which was significantly higher than those of other pesticides. The control efficacy of rotenone 2.5% EC 600 times solution was the worst, which was only 46.87% seven days after application. Rotenone 2.5% EC 400 times solution had the best control effect against the aphids, with the efficacy of 85.08% seven days after application, and matrine 1.3% AS 1 200 times solution showed the lowest control effect, which was 62.75% seven days after application. All of the tested bio-pesticides were safe to strawberry and no damage was observed. In strawberry production, abamectin 1.8% ME 1 400 times solution and rotenone 2.5% EC 400 times solution are recommend as a priority for the control of mites and aphids, respectively.