防治豆角蓟马的化学药剂筛选研究

Effects of Several Chemicals on the Control of the Bean Thrips

为帮助徐闻县的豆角种植户解决蓟马为害带来的损失,选用当地5种常用的化学农药进行防治豆角蓟马的效果试验。结果表明:5%甲维盐+20%啶虫眯复配试剂对于豆角蓟马防治效果最好,虫口减退率达到78.46%,校正防效为81.00%;20%啶虫脒防治后虫口减退率可以达到66.20%,校正防效是70.17%,但是持效期有所下降;效果不太理想的是5%的吡虫啉,虫口减退率只有46.15%,校正防效是52.49%,持效期较短。这几种试剂对豆角的生长和发育都不会造成影响,属于高效低毒的杀虫剂。

In order to help bean growers in Xuwen County to solve the losses caused by thrips,five commonly used local chemical pesticides were selected to compare the effects of the prevention and control of thrips.After using five kinds of reagents,the rate of insect population decline and the effect of correction and prevention were analyzed and summarized.The results showed that the combination reagent of 5%Emamectin Benzoate and 20%Acetamiprid had the best control effect on the bean thrips,with the decrease rate of the insect population reaching 78.46%and the correction control effect being 81.00%.The effect was still significant after the 5 th day,so it was the best choice for the control of the bean thrips both in the rate of the decrease of the insect population and the effective period.Secondly,the control effect is better is a single dose of 20%Acetamiprid,the rate of decline can reach 66.20%,the corrected control effect is 70.17%,but the duration has decreased.The less ideal effect was 5%Imidacloprid,with a decrease rate of 46.15%and a correction effect of 52.49%,with a short duration.These reagents do not affect the growth and development of the bean,which is a highly effective and low-toxic insecticide.