植物杀虫剂苦皮藤素 Ⅳ和Ⅴ混用研究  

Toxicity interaction of Celangulin Ⅳ and Ⅴ from Celastrus angulatus against Armyworm (Mythimna separata) Larvae.

作　　者：胡兆农[1] 姬志勤[1] 祁志军[1] 师宝君[1] 吴文君[1] 

机构地区：[1]西北农林科技大学农药研究所,陕西杨凌712100

出　　处：《西北农林科技大学学报（自然科学版）》2004年第5期27-30,共4页Journal of Northwest A&F University(Natural Science Edition)

基　　金：国家自然科学基金倾斜项目(39970505);国家自然科学基金重点项目(30130130)

摘　　要：　以粘虫为试虫,采用载毒叶碟法,根据不同症状指标研究了苦皮藤素 和 的互作毒力。结果表明,苦皮藤素 与 混用(体积比)比例在3∶1～1∶3时,苦皮藤素 对苦皮藤素 的毒杀作用具有增效作用,苦皮藤素 对苦皮藤素 的麻醉作用无明显影响。在此基础上,提出了当研究在症状学指标上有显著差异的杀虫剂间的相互作用时,应用"互作比值"的概念。Celangulin Ⅳ and celangulin Ⅴ isolated from the root bark of the plant Celastrus angulatus are the major active ingredients of this botanical insecticide.The toxicity interaction of the different ratio mixture of celangulin Ⅳ and Ⅴ has been examined by means of the leaf disk method against armyworm (Mythimna separata) larvae.The bioassay results showed that the insecticidal efficacy of celangulin Ⅴ (against) armyworm larvae was synergied by celangulin Ⅳ,but celangulin Ⅴ has no synergistic effects on the narcotic efficacy of celangulin Ⅳ when the mixed ratio (V/V) of celangulin Ⅳ and Ⅴis from 3∶1 to 1∶3.On the basis of the results,'interaction ratio' which might be used to evaluate the toxicity interaction of the mixture of several insecticides with different symptom guideline was put forward.

关 键 词：植物杀虫剂 苦皮藤素Ⅳ 苦皮藤素V 混用 载毒叶碟法 毒杀作用 增效作用 互作比值 

分 类 号：S482.39[农业科学—农药学]