摘要
为了筛选天津地区防治豇豆蓟马的有效药剂,选用四氯虫酰胺、联苯菊酯、阿维菌素、乙基多杀菌素、氯虫苯甲酰胺5种杀虫剂开展了对豇豆蓟马的田间药效试验.试验结果表明:药后1d,各供试药剂均表现出较好的速效性,60 g/L乙基多杀菌素悬浮剂的中、高剂量防效分别为78.98％、83.57％,显著好于其他药剂.药后3d,2.5％联苯菊酯微乳剂的防效降低至＜44.64％,其他供试农药各处理的防效均达最高值,60 g/L乙基多杀菌素悬浮剂的防效最好,为73.63％～85.79％.1.8％阿维菌素乳油和5％氯虫苯甲酰胺悬浮剂的防效次之,各剂量防效为53.81％～77.27％.药后7d,各供试农药的防效均出现不同程度的降低,60 g/L乙基多杀菌素悬浮剂的高、中、低剂量、1.8％阿维菌素乳油和5％氯虫苯甲酰胺悬浮剂的高、中剂量、10％四氯虫酰胺悬浮剂的高剂量防效仍保持在＞60％,其他各处理的药效结果均不理想.
Abstract
In order to screen effective pesticides for the prevention and control of cowpea thrips in Tianjin,field efficacy studies were conducted on tetrachlorantraniliprole,bifenthrin,abamectin,spinetoram and chlorantraniliprole,with imidacloprid as the conventional control.The results showed that all the tested insecticides showed good rapid efficacy after 1 day of treatment.The mid-and high-dose application of 60 g/L spinetoram SC achieved control effects of 78.98％and 83.57％,respectively,significantly outperforming the other insecticides.After 3 days of treatment,the efficacy of 2.5％bifenthrin ME decreased below 44.64％,while the other tested insecticides showed their highest control effects at all the treatments,with 60 g/L spinetoram SC providing the best preventive effect at 73.63％～85.79％.1.8％abamectin EC and 5％chlorantraniliprole SC followed,with control effect of 53.81％～77.27％.After 7 days of treatment,all the tested insecticides showed some decline in efficacy.The control effects of high-,medium-,and low-dose treatment of 60 g/L spinetoram SC,the high-and medium-dose treatment of 1.8％abamectin EC and 5％chlorantraniliprole SC,as well as the high-dose treatment of 10％tetrachlorantraniliprole SC,maintained control effect above 60％.The efficacy of the other treatments was less favorable.
维普
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