巴氏新小绥螨防治温室辣椒蓟马效果评价

Evalution of the Control Efficacy of Amblyseius barkeri to Trips on Pepper

实验通过释放不同益害比的巴氏新小绥螨防治温室辣椒蓟马,结果表明:在蓟马发生初期释放巴氏新小绥螨,可有效控制蓟马虫量增长,释放7 d后益害比为1∶20的处理防效可达到94.86%,效果显著;益害比为1∶5、1∶10和1∶20的各处理在各时期均无显著差异,而益害比为1∶40的处理在释放后5 d、7 d和14 d防治效果均显著低于以上3个处理,综合考虑选择益害比1∶20为最佳释放量。

The predatory mites,Amblyseius barkeri were released with different ratios of benefitial to harmful in pepper field to control the trips in the green house. The result showed that Amblyseius barkeri could efficient control the growth of trips when releasing in incipient harm of trips,the control effect reached 94.86% in 7 days as the ratio of benefitial to harmful was 1∶20. The control effects were not apparently different among the ratios of 1∶5,1∶10 and 1∶20 in the experiment. Meanwhile the control effect of ratio of 1∶40 was inferior to other ratios in 5 days,7 days and 14 days. So the best ratio of benefitial to harmful was 1∶20.