昆虫学报2011，Vol.54Issue(8)：902-909,8.
阳离子助剂1227和C8-10及有机硅助剂Breakthru S240对三种杀虫剂的增效作用
Synergistic action of cationic adjuvants 1227 and C8-10 and the silicone adjuvant Breakthru S240 to three insecticides
摘要
Abstract
In order to increase the control effects, reduce the use of insecticides, enhance the safety of agricultural products, the synergism of two cationic adjuvants (1277 and C8-10) and one silicone adjuvant (Breakthru S240) to three insecticides beta-cypermethrin, chlorpyrifos and chlorfenapyr against 3rd-instar larvae of the Spodoptera exigua ( Hiibner) and Helicoverpa armigera ( Hiibner) were studied by dipping method, and the influence of the three adjuvants on physical properties of water was determined. The results showed that; (1 ) all of the tested adjuvants showed significant synergism to those insecticides, and the synergism ratio was significantly correlated to the concentration of adjuvant. The synergism ability of tested adjuvants to those insecticides against S. Exigua and H. Armigera was C8-10 > 1227 > Breakthru S240 under the same concentration, except that Breakthru S240 showed higher synergism ability to 1227 against H. Armigera. The optimum synergistic concentration of tested adjuvants to those insecticides against S. Exigua was 900 mg/L, while against H. Armigera it changed into 900 mg/L (1227), 300 mg/L (C8-10) and 900 mg/L ( Breakthru S240) , respectively. (2) All of the tested adjuvants showed significant influence on the physical properties of water. Reducing ability of surface tension, as well as the increasing ability of expanded diameter and the maximum retention of tested adjuvants to water were Breakthru S240 > 1227 > C8-10 under the same concentration. In conclusion, the synergism of tested cationic adjuvants (1277 and C8-10) to three insecticides against both S. Exigua and H. Armigera was significantly higher than that of silicone adjuvant ( Breakthru S240) , while the latter showed better ability to enhance insecticide deposition on plant leaves than the former. These results provide theoretical proofs for the application of the tested adjuvants.关键词
杀虫剂/阳离子助剂/有机硅助剂Breakthru S240/甜菜夜蛾/棉铃虫/增效作用/增效比Key words
Insecticide/cationic adjuvant/silicone adjuvant Breakthru S240/Spodoptera exigua/Helicoverpa armigera/synergism/synergism ratio分类
生物科学引用本文复制引用
刘永强,张贵森,周超,王伟,胡延萍,慕卫..阳离子助剂1227和C8-10及有机硅助剂Breakthru S240对三种杀虫剂的增效作用[J].昆虫学报,2011,54(8):902-909,8.基金项目
公益性行业(农业)科研专项经费项目(200803007) （农业）
