植物源杀虫剂“查虫清”对5种害虫的生物活性及对3种天敌的毒性测定  

Measurement of toxicity of botanical insecticide "Chachongqing" to five species pests and three natural enemies of pests

作　　者：郝志胜[1] 郭晶丽[1] 彭宇[1] 张加川 

机构地区：[1]湖北大学生命科学学院,湖北武汉430062 [2]湖北省咸宁市川玉茶业有限责任公司,湖北咸宁437100

出　　处：《湖北大学学报（自然科学版）》2011年第1期110-114,共5页Journal of Hubei University：Natural Science

基　　金：湖北省自然科学基金重点项目(2008CDA082);湖北省科技厅研究与开发计划(2008BBB008;2009EGB003);武汉市人事局创新人才开发资金(武人[2008]84号)资助

摘　　要：报道一种由天然植物产物配制而成的植物源杀虫剂"查虫清"对5种害虫的生物活性及对2种蜘蛛和草蛉的毒性作用.结果显示:"查虫清"对菜蚜、小菜蛾、假眼小绿叶蝉和菜青虫主要表现为拒食作用,拒食中浓度(AFC50)分别为12.03、15.05、55.07、35.37 mg/mL."查虫清"对茶尺蠖2龄幼虫主要表现为毒杀作用,200 mg/mL的"查虫清"对2龄茶尺蠖幼虫96 h后致死率为77.78%,致死中浓度LC50为71.4 mg/mL,"查虫清"对高龄幼虫(4龄及以上)无明显作用.此外,"查虫清"对小菜蛾和菜青虫还有抑制生长发育的作用,80 mg/mL的"查虫清"处理96 h后对小菜蛾的发育抑制率为52.78%,200 mg/mL的"查虫清"处理96 h后对菜青虫的发育抑制率为75%."查虫清"对拟环纹豹蛛、拟水狼蛛和大草蛉无毒害作用."查虫清"可以作为一种环境友好型的植物源农药推广使用.Reported the insecticidal activity of ＂Chachongqing＂,a botanical pesticide and it＇s effect on non-target organisms.At the concentration of 80 mg/mL,the extract showed significant antifeedant effect on Lipaphis erysimi,Pieris rapae,Plutella xylostella,and Empoasca vitis.The AFC50 after 48 h were 12.03,35.37,15.05 and 55.07 mg/mL.The water extracts showed larvicidal activity against 2nd larvae of Ectropis obliqua.Under the concentration of 200 mg/mL,the larval mortality after 96 h was 77.78%（LC50=71.4 mg/mL）.＂Chachongqing＂ also had strong growth inhibitors to Pieris rapae and Plutella xylostella,but the effect of growth inhibitory to Pieris rapae（75%） was better than to Plutella xylostella（52.78%）.Immersion method was also used to test the toxicity of ＂Chachongqing＂ on two natural enemies of insects： two species of spider（Pardosa pseudoannulata,Pirata subpiraticus） and a chrysopa（Chrysopa septempunctata）.The results showed that the ＂Chachongqing＂ was safe to them.

关 键 词：“查虫清” 菜蚜 小菜蛾 茶尺蠖 假眼小绿叶蝉 菜青虫 天敌 毒性测定 

分 类 号：S482.3[农业科学—农药学]