狼毒活性部位复合乳油功效

为增强瑞香狼毒制剂的杀虫药效、充分开发利用以瑞香狼毒为主的植物源农药,进行了瑞香狼毒杀虫活性部位与其它药物的复配实验。采用瑞香狼毒杀虫活性部位(LD)分别与烟碱乳油(YJR)、CT-901A(Bz)的不同质量比,在室内对家蝇、酢酱草茹叶螨(Petrbia hartiEwing)进行毒力测定,利用软件进行毒力回归分析。实验结果显示,LD和YJR、LD和Bz的两两复配及三者(LD YJR Bz)的复配能够起显著增效作用,特别是20:1:1(LD:YJR:Bz)、30:1:1(LD:YJR:Bz)对家蝇的毒力效果更加明显,LC50达到了0.005 mg/L,20:1(LD:Bz)、30:1(LD:Bz)、30:1:1(LD:YJR:Bz)对酢酱草茹叶螨(Petrbia hartiEwing)的毒力效果也同样显著,LC50也达到了0.005 mg/L。并对瑞香狼毒活性部位进行初步分离检测,其有效成分为黄酮类物质。

Effects of Stellera chamaejasme's Active Fraction Compound Oil Emulsion

To enhance the insecticidal effects of Stellera chamaejasme,and to improve the application of S.chamaejasme as botanical pesticide,the toxicity of the combination from the active fraction in the roots of S.chamaejasme's extracts(LD) with nicotine oil emulsion(YJR) or /and CT-901A(Bz) on housefly and Petrbia harti Ewing was studied.The toxicity regression analysis,LC50 and regression equation were obtained by using EXCEL.The results showed that synergistic effects were observed in all combination of LD Bz,LD YJR and LD Bz YJR.Both the LC50 of 20:1:1(LD:YJR:Bz) and 30:1:1(LD:YJR:Bz) on housefly,and the LC50 of 20:1(LD:Bz),30:1(LD:Bz),and 30:1:1(LD:YJR:Bz) on Petrbia harti Ewing were 0.005 mg/L.The active fraction of S.chamaejasme's roots extracts was separated by column chromatography,and the active compounds were determined to be flavonoids.