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.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
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)
