Bt-15A3烟雾剂对甘蓝小菜蛾药效试验  

Efficacy Trials of Bacillus thuringiensis 15A3 Smoke Agent on Plutella xylostella

作　　者：杨红军[1] 张立顺[1] 郑湘[1] 王东生[1] 王树华[1] 陈颖[2] 但汉斌[2] 魏雪生[2] 唐西[2] 张滨[2] 

机构地区：[1]天津市武清区农业技术推广中心,天津301700 [2]天津市农科院园艺工程研究所,天津300384

出　　处：《天津农学院学报》2006年第3期20-22,共3页Journal of Tianjin Agricultural University

基　　金：天津市农业生物技术中心科技(攻关)计划项目"新型高效广谱Bt-15A3杀虫菌株产业化技术研究"(033122111-1)

摘　　要：以Bt-15A3烟雾剂采用3WF-2.6型背负式喷雾喷粉机进行超低量喷雾,对小菜蛾进行田间药效试验。结果表明:Bt-15A3烟雾剂的供试剂量为1312.5mL/hm2和1575mL/hm2时对幼虫有较理想的防效,防效分别达到83.56%和90.07%。对于世代重叠严重的田块,应在药后7d进行补施,以达到彻底控制小菜蛾危害的目的。By field trials of spraying Bacillus thuringiensis 15A3 smoke agents with 3WF-2.6 sprayer on Plutella xylostella, the results show that the field efficacy of Bt-15A3 smoke agents is desirable On the larva, the corrected controlling ratio of smoke agent could reach 83.56% and 90.07%, respectively by the dose of 1 312..5 mL/hm^2 and 1 575 mL/hm^2. So, it is suggested that the supplement should be carried out after spraying the agents for seven days on the fields existing severe reduplicated generation in order to control the Plutella xylostella completely.

关 键 词：Bt-15A3烟雾剂 超低量喷雾 小菜蛾 

分 类 号：S436.341.24[农业科学—农业昆虫与害虫防治]