摘要
豆大蓟马是海南冬种豇豆的重要害虫,严重影响豇豆产品质量和商品价值。本文采用离心管药膜法,测定了毒死蜱、阿维菌素、高效氯氰菊酯、甲氨基阿维菌素苯甲酸盐、吡虫啉和啶虫脒等6种杀虫剂对豆大蓟马的毒力,并测定了甲氨基阿维菌素苯甲酸盐与其它5种杀虫剂复配的增效作用及最佳配比。结果表明:供试药剂对豆大蓟马毒力(LC50)大小顺序为:甲维盐(0.000 5 g/L)>阿维菌素(0.056 1 g/L)>毒死蜱(0.125 3 g/L)>高效氯氰菊酯(0.165 4 g/L)>啶虫脒(0.228 3 g/L)>吡虫啉(19.803 5 g/L);以甲氨基阿维菌素苯甲酸盐与毒死蜱复配的共毒系数为776;甲氨基阿维菌素苯甲酸盐与毒死蜱配比为1∶9时的共毒系数为1 733。本研究为开发豆大蓟马防治药剂和田间化学防治提供了基本资料。
Megalurothrips usitatus (Bagnall) is an important pest in Hainan winter cowpea with serious impact on product quality and commercial value. Laboratory studies were conducted on the toxicity and synergistic effect of the complex formulation of 6 original insecticides to Megalurothrips usitatus by using centrifuge tube residual bioassay. The results showed that the order of the toxicity (LCso) was: emamectin-benzoate (0.000 5 g/L) 〉abamectin (0.056 1 g/L) 〉chlorpyrifos (0.125 3 g/L) 〉cyhalothrin (0.165 4 g/L) 〉acetamiprid (0.228 3 g/L) 〉imidacloprid (19.803 5 g/L); The significant synergism effect could be found after mixing emamectin-benzoate with chlorpyrifos and the greatest synergism took place at the ratio of 1:9, with the cotoxicity coefficient (CTC) of the mixture was 776 and 173 3 respectively. The study provides basic data for development of control agents and field chemical control.
出处
《热带作物学报》
CSCD
北大核心
2014年第8期1615-1618,共4页
Chinese Journal of Tropical Crops
基金
中央级公益性科研院所基本科研业务费(No.2009hzs1j009
2014hzs1j011)
2014年海南省农作物病虫害防控项目
关键词
杀虫剂
豆大蓟马
毒力测定
复配
增效
Insecticide
Megalurothrips usitatus (Bagnall)
Toxicity test
Complex formulation
Synergistic effect