25％噻虫胺＆#183;高效氯氟氰菊酯微囊悬浮剂防治温室白粉虱的田间药效试验

为了明确25％噻虫胺＆#183;高效氯氟氰菊酯微囊悬浮剂对温室白粉虱的防治效果，2013年以常用药剂25％噻虫嗪水分散粒剂和5％高效氯氟氰菊酯微乳剂为药剂对照，在夏春秋甘蓝上测定了25％噻虫胺＆#183;高效氯氟氰菊酯微囊悬浮剂2500倍液、2000倍液和1500倍液对温室白粉虱的田间防治效果。结果表明：在试验剂量条件下，25％噻虫胺＆#183;高效氯氟氰菊酯微囊悬浮剂对温室白粉虱具有较好的防治效果，且持效期长，对温室白粉虱的天敌种类和数量以及甘蓝生长等均无不良影响。其中，施用1500倍液防效最好，试验期内的防效始终＞药剂对照，施药后第7 d防效为86.97％；施用2000倍液防效次之，除施药后第1 d外，其他时段的防效均＞药剂对照且与施用1500倍液防效差异不显著。生产上推荐25％噻虫胺＆#183;高效氯氟氰菊酯微囊悬浮剂施用浓度为2000～1500倍液，折合有效成分用量为93.75～112.5 g/hm2。

Control Effects of 25%Clothianidin Lambda-cyhalothrin Microcapsules SC on Trialeurodes vaporariorum in Field

In order to define the control effects of 25% clothianidin lambda-cyhalothrin microcapsules SC on Trialeurodes vaporariorum, the 25% clothianidin lambda-cyhalothrin microcapsules SC was diluted 2 500, 2 000 and 1 500 times in liquid, and the control effects of which on Trialeurodes vaporariorum were tested with the 25%actara WG and 5% lambda-cyhalothrin ME insecticides as control in 2013.The results showed that 25%clothianidin lambda-cyhalothrin microcapsules SC revealed good control effects , and in the dose of 25%clothianidin lambda-cyhalothrin microcapsules SC, the cabbage was safe and there were no adverse effects on natural enemy species and quantity.25% clothianidin lambda-cyhalothrin microcapsules SC 1 500-2 000 times liquid treatments showed good control effects on Trialeurodes vaporariorum, and they were all higher than the effects of control treatments.The control effect of 25% clothianidin lambda-cyhalothrin microcapsules SC diluted 1 500 times was best, and the control effect was 86.97% in 7 days after applied.The suitable concentration of 25%clothianidin lambda-cyhalothrin microcapsules SC was 1 500-2 000 times liquid, and the amount of effective component were 93.75-112.5 g/hm2.