江西农业学报2016，Vol.28Issue(9)：46-49,4.DOI:10.19386/j.cnki.jxnyxb.2016.09.11
阿维菌素与多杀霉素混配对小菜蛾的增效作用及田间防效
Synergism and Field Control Effect of Mixtures of Avermectin and Spinosad against Plutella xylostella
摘要
Abstract
The indoor leaf-dipping bioassay and field plot tests were conducted respectively to research the synergism and field control effects of mixtures of avermectin and spinosad against diamondback moth ( DBM) , Plutella xylostella.The best syner-gistic effect was discovered in the mass ratio of 3.0∶2.0 ( avermectin∶spinosad) , and the co-toxicity coefficient of this mixture a-gainst DBM was 161.9.On the 10th day after spraying 18.75 g/hm2 or 22.50 g/hm2 5%avermectin・ spinosad (3.0∶2.0) EW in field, its control effect against DBM populations in 3 different districts was 86.66%~93.64%, and that against 2 avermectin-highly-resistant DBM populations with the resistant ratio of 158.88 or 95.03 was over 83.21%.It was suggested that 5%avermec-tin・ spinosad EW should be sprayed at the dosage of 18.75~22.50 g/hm2 at the low-instar larva peak stage of DBM in vegetable production.关键词
小菜蛾/阿维菌素/多杀霉素/复配/田间防效Key words
Plutella xylostella/Avermectin/Spinosad/Complex formulation/Field control effect分类
农业科技引用本文复制引用
陈琼,曾庆旭,周学强,何箕全,阳爱民,秦文婧,黄水金..阿维菌素与多杀霉素混配对小菜蛾的增效作用及田间防效[J].江西农业学报,2016,28(9):46-49,4.基金项目
江西省科技支撑计划项目（20122BBF60102）；国家公益性行业（农业）科研专项（201103021）。 （）
