3种植物提取物复配对松梢螟幼虫的联合毒力作用  

Common-toxicity of Mixture of Three Plant Extracts to the Larvae of Dioryctria splendidella

作　　者：闫瑞坤[1] 周国英[1] 伍南[1] 

机构地区：[1]中南林业科技大学/林业生物技术湖南省重点实验室,长沙410004

出　　处：《中国农学通报》2012年第7期27-31,共5页Chinese Agricultural Science Bulletin

基　　金：林业公益性行业科研专项经费项目"生物源杀菌剂开发与应用"(201004003);林业公益性行业科研专项经费项目"南方速生丰产林健康与活力维护技术研究"(200904006;201004014)

摘　　要：为测定3种植物提取物复配对松梢螟幼虫的联合毒力作用,并为开发此类植物源杀虫剂奠定理论基础。将乙醇作为溶剂提取3种植物中的有效活性成分。采用浸虫法在室内将博落回、柚子皮及垂序商陆提取物进行两两复配,测定了各复配剂对松梢螟幼虫的联合毒力作用,同时筛选出最佳的复配组合和比例。结果表明:博落回与柚子皮提取物复配的效果并不显著,仅在处理比例为1:5和5:1时表现出一定的相加作用;博落回与垂序商陆提取物复配效果在处理比例为1:3时表现出明显的增效作用,共毒系数(CTC)为147.52;柚子皮与垂序商陆提取物复配效果在处理比例为1:3时增效作用最为显著,共毒系数(CTC)为170.02。因此,3种植物提取物复配对松梢螟幼虫联合毒力最佳的复配组合和比例为柚子皮与垂序商陆,质量比为1:3。The research aimed to determine the common-toxicity of the mixture of 3 kinds of plant extracts and provide theoretical basis for developing new botanical pesticide. With ethanol as extracting solvent, active components were extracted from 3 kinds of plants. The common-toxicity of the mixtures, which were respectively mixed with the plant extracts of Macleya cordata, Citrus maxima peels and Phytolacca americana L., to control the larvae of D. splendidella were tested in the laboratory by using impregnation method. The results showed that the effect of the mixed extracts of M. cordata and Citrus maxima peels wasn ＇ t significantly, but it had some additive function only when the mix-proportion were reached to 1：5 and 5：1. The mixed extracts of M. cordata and Phytolacca americana in mix-proportion of 1：3 had remarkable synergistic effects, and the common-toxicity coefficient （CTC） was 147.52. When Citrus maxima peels extracts mixed with P. americana extracts in mix-proportion of 1：3, the CTC reached to 170.02. The overall results indicated that the best mixture combination was C. maxima peels extracts and P. americana extracts, and the best mix-proportion was 1：3.

关 键 词：植物提取物 复配 松梢螟 联合毒力 

分 类 号：S767.37[农业科学—森林保护学]