两种植物源杀虫剂对猕猴桃小薪甲的田间药效试验

Field Control Effects of Two Botanical Insecticides on Kiwifruit Beetles

近年来,猕猴桃小薪甲已成为陕西猕猴桃园发生的重要虫害之一。为解决猕猴桃小薪甲防治无药可用,常规防治药剂存在风险等问题,笔者在陕西省城固县猕猴桃园开展了两种植物源杀虫剂防治小薪甲的探索性试验。结果表明:1%苦皮藤素水乳剂和0.5%苦参碱水剂对猕猴桃小薪甲均有很好的防治效果。其中1%苦皮藤素水乳剂5000~3000倍液用药3 d后,防治效果为78.74%~96.79%,用药7 d后防治效果为86.84%~99.65%;0.5%苦参碱水剂3000~1000倍液用药3 d后,防治效果为74.28%~89.03%,用药7 d后防治效果为85.73%~96.08%。猕猴桃幼果期,推荐1%苦皮藤素水乳剂按5000~3000倍液使用,与常用化学农药防治效果相当,且具有持效期更长的优点;0.5%苦参碱水剂按3000~1000倍液使用,防治效果显著高于常用化学农药。

Kiwifruit beetles have emerged as significant pests in Shaanxi in recent years.With the lack of chemical solutions and associated risks with conventional insecticides,the author carried out an exploratory experiment using two botanical insecticides in Chenggu County,Shaanxi Province.The results showed that celangulins and matrine exhibited effective control against kiwifruit beetles.The control effect of 1%celangulins EW ranged from 78.74%to 96.79%after 3 days of treatment and increased to 86.84%to 99.65%after 7 days of treatment.For 0.5%matrine SL,the control effect ranged from 74.28%to 89.03%after 3 days and from 85.73%to 96.08%after 7 days of treatment.