乳浆大戟植物杀虫水乳剂对枸杞蚜虫的毒力测定及田间防效  

Toxicity Determination and Field Efficacy of Botanical Insecticide from Euphorbia esula Linn.

作　　者：刘畅[1] 王芳[1] 张蓉[1] 张兴[2] 周一万[2] 

机构地区：[1]宁夏农林科学院植物保护研究所,银川750002 [2]西北农林科技大学无公害农药研究服务中心,陕西杨凌712100

出　　处：《农药》2014年第9期680-682,共3页Agrochemicals

基　　金：宁夏自治区科技攻关项目(KGX-09-10-10);宁夏自然科学基金项目(NZ13122)

摘　　要：[目的]评价新型植物源农药乳浆大戟植物杀虫水乳剂对枸杞蚜虫的室内杀虫活性和田间防治效果。[方法]分别采用浸叶法和常规喷雾法进行室内毒力测定和田间药效试验。[结果]乳浆大戟植物杀虫水乳剂对枸杞蚜虫24h的LC50值为0.3977mg/L;在剂量为3000、6000ga.i./hm2时,药后1、3、5、7d,防效分别超过了72.0177%、59.953 9%、61.934 3%、65.016 1%。[结论]乳浆大戟植物杀虫水乳剂对枸杞蚜虫表现出很高的毒杀活性和良好的田间防治效果,且对作物和天敌安全。[Aims] In order to provide a scientific reference for Euphorbia esula further research and development, the insecticidal activity in greenhouse and field efficacy of this novel botanical insecticide against Chinese wolfberry aphid was investigated. [Methods] Leaf-dipping and spraying methods were used to evaluate the insecticidal activity and field efficacy, respectively. [Results] The LC50 value of the botanical insecticide against Chinese wolfberry aphid was 0.397 7 mg/L at 24 h after treatment. At the application dosage of 3 000, 6 000 g a.i./ha, the average control efficacies were more than 72.017 7, 59.953 9, 61.934 3, 65.016 1%, respectively, at 1st, 3rd, 5th and 7th day after treatment. [Conclusions] Botanical Insecticide from E. esula Linn. has excellent insecticidal activity and field control efficacy against Chinese wolfberry aphid, and it is safe to beneficial insects and crops.

关 键 词：乳浆大戟 植物源农药 水乳剂 枸杞蚜虫 杀虫活性 田间药效 

分 类 号：S482.3[农业科学—农药学]