6种杀虫剂对设施甜瓜烟粉虱的防治效果

为筛选出防治烟粉虱高效低毒的药剂,选取6种高效低毒杀虫剂对海南地区设施甜瓜烟粉虱进行田间防治效果进行比较研究,通过调查药前与药后虫口数,计算各药剂1、3、7、10d的防治效果,其中,1.5％甲氨基阿维菌素苯甲酸盐（EC）的防效分别为97.67％、91.48％、82.24％和90.16％;3.2％阿维菌素（EC）的防效分别为97.80％、86.85％、93.69％和91.07％.结果表明,3.2％阿维菌素（EC）和1.5％甲氨基阿维菌素苯甲酸盐（EC）不仅对烟粉虱的防治效果较好,而且具有持效期长的特点,可作为海南地区设施甜瓜烟粉虱防治的首选药剂.

Control Efficacy of Six Pesticides on Bemisia tabaci in Greenhouse Melon Production

In order to choose the most efficient and lowest toxicity pesticide to control Bemisia tabaci in protected melon pro- duction in Hainan ,this field experiment was conducted to estimate the efficacy of six pesticides on control of Bemisia tabaci. Byinvestigating the quantity of pests before and after pesticide application, the control efficacy of the pesticides in ld, 3d, 7d and 10 d were calculated. The efficacy of 1.5% Emamectin benzoate （EC） was 97.67%, 91.48%, 82.24% and 90.16%, respectively ; and the efficacy of 3.2% Abamectin （EC） was 97.80%, 86.85%, 93.69% and 91.07%, respectively. The results showed that the two pesticides not only had the highest efficacy ,but also had long control period. These two insecticides may be considered as the first choice to control B. tabaci in protected melon production in Hainan.