防治B型烟粉虱药剂筛选及药效测定  

Synergistic Effect of Composite Reagents to Bemisia tabaci Biotype B

作　　者：李伟[1] 宋旭明[1] 李慧婵 

机构地区：[1]山东潍坊烟草有限公司安丘分公司,山东安丘262100 [2]山东省安丘市实验中学,山东安丘262100

出　　处：《安徽农业科学》2015年第19期89-90,92,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目的]筛选烟草上防治B型烟粉虱的良好药剂配方。[方法]采用试管药膜法测定阿维菌素、吡虫啉、吡丙醚、噻嗪酮4种药剂及阿维菌素与吡丙醚混配对烟粉虱的毒力及增效作用,并按最佳配比加工成乳油进行田间测试。[结果]4种药剂中,阿维菌素对烟粉虱的半数致死浓度(LC50)为0.774 mg/L,阿维菌素与吡丙醚混配比例为2∶1时表现出一定的增效作用,共毒系数(CTC)为127.52。5.4%阿维菌素·吡丙醚EC在300 g/hm2剂量下药后15 d对烟粉虱的防效为82.41%,显著高于阿维菌素单剂。[结论]阿维菌素与吡丙醚混配是防治烟草烟粉虱的良好替代药剂。[Objective] The aim was to screen better pesticides for controlling Bemisia tabaci biotype B. [Method] Toxicity and synergistic effect of four different sorts of insecticides and realitive mixed ligands to Bemisia tabaci biotype B were measured with tube residual film methods. [Result] The LC50 of Abamectin was 0. 774 mg / L,the mixture of Abamectin and Pyriproxyfen at the ratio of 1∶ 2 got additive effects with CTC 127. 52. The control effect was 82. 41% when 5. 4% Abamectin·pyriproxyfen EC was used at dose of 300 g / hm2 in 15 days after treatment,significantly higher than 1. 8% Abamectin EC. [Conclusion] The combination of Abamectin and Pyriproxyfen can be used to control Bemisia tabaci biotype B on tobacco effectively.

关 键 词：B型烟粉虱 阿维菌素 吡丙醚 药剂复配 

分 类 号：S482.3[农业科学—农药学]