氟啶虫胺腈等7种杀虫剂对西瓜蚜虫防效比较

为筛选出可用于防治西瓜蚜虫的高效低毒药剂,对7种杀虫剂田间药效进行了比较。试验结果表明,50%氟啶虫胺腈水分散粒剂对西瓜蚜虫的防治效果最好,药后2、7、14 d防效分别为89.53%、96.93%和97.17%;其次为10%氟啶虫酰胺水分散粒剂和20%呋虫胺可溶性粒剂,药后14 d防效分别为96.60%和94.35%;10%溴氰虫酰胺可分散油悬浮剂、25%噻虫嗪水分散粒剂和10%啶虫脒微乳剂对西瓜蚜虫速效性和持效性均不突出;10%高效氯氟氰菊酯水乳剂虽速效性较好,但持效性较差。因此,氟啶虫胺腈、氟啶虫酰胺、呋虫胺可替代传统菊酯类和烟碱类药剂用于瓜蚜的防治。

Comparison of Control Efficacy of 7 Insecticides Including Sulfoxaflor agianst Watermelon Aphis gossypii

In order to screen out high-efficiency and low-toxicity insecticides for controlling watermelon Aphis gossypii, the comparative test of 7 insecticides were conducted in field. The results showed that 50% sulfoxaflor water dispersible granule (WDG) had the highest control efficiencies, and the efficiencies were 89.53%, 96.93% and 97.17% on 2, 7 and 14 days after treatment, respectively. And the Next were 10% flonicamid WDG and 20% dinotefuran soluble granule (SG), and the efficiencies were 96.60% and 94.35% on 14 days after treatment. The control effects of 10% cyantraniliprole oil suspended agent (OD), 25% thiamethoxam WDG and 10% acetamiprid micro emulsion (ME) against watermelon A. gossypii were not excellent. 10% lambda-cyhalothrin emulsion in water (EW) had good quick acting, but poor persistent acting. Therefore, sulfoxaflor, flonicamid and dinotefuran could replace the traditional insecticides to control A. gossypii.