0.5%印楝素胶囊剂的研制及活性效应测定  

DEVELOPMENT OF 0.5% AZADIRACHTIN MICROENCAPSULE AND TEST FOR ITS ACTIVITY

作　　者：祝荣 秦森荣[2] 邓先明[2] 刘光珍[2] 周淑云[2] 张瑞萱 邹瑶丽 

机构地区：[1]重庆荣达建设(集团)有限公司,重庆401147 [2]西南农业大学,重庆400716

出　　处：《西南农业大学学报（自然科学版）》2003年第6期479-482,486,共5页Journal of Southwest Agricultural University

基　　金：国家科技成果转化基金项目(02EFN215110517);国家专利号(02113868.1)资助

摘　　要：以糊精作壳料,印楝素原药为芯料,采用"固相共研法"工艺路线研制0.5%印楝素分子胶囊剂。对制剂的活性生测结果显示:对4龄菜青虫的毒力(LC50)为4.3202±0.3180mg/L,Cl0.95=3.7389～4.9913mg/L。5～250mg/L对菜青虫拒食率为85.60%～82.44%;拒食指数为11.82～14.94,均小于20,拒食作用显著。田间药效试验结果表明:用10,6.25,4.55mg/L液对3～4龄菜青虫喷雾处理,药后3d的校正防效依次为85.89%,82.95%,78.97%。对照药剂0.3%印楝素EC6mg/L为82.83%;98%巴丹SP0.12%为87.24%。药后7d的校正防效依次为81.86%,82.48%,80.88%,印楝素EC为77.31%,巴丹为84.38%。5种处理间互比的差异均不显著(P>0.05)。0.5% azadirachtin microencapsules (Azadirachtin MC) manufactured with the method of 'common solid phase grinding' are made from β-CD and azadirachtin. In a laboratory assay, the LC_(50) of Azadirachtin MC against the 4^(th) instar larvae of Pieris rapae were determined to be 4.3202±0.3180 mg/L and its CL_(0.95) 3.7389～4.9913 mg/L. P. rapae apparently refused to eat the food treated with Azadirachtin MC at 5～260 mg/L with an anti-feeding rate of 85.60%~82.44% and an anti-feeding index of 11.82~14.94. Field spray with Azadirachtin MC solution at 10, 6.25 and 4.55 mg/L gave a corrected control efficiency of (85.89%), 82.95% and 78.97%, respectively, as determined 3 days after the treatment and 81.86% 82.48% and 80.88% as determined 7 days after the treatment. In contrast, the control efficiency of Azadirachtin EC was 77.31% and that of Pardon was (84.38%). ANOVA showed that no significant difference was present among them at P=0.05.

关 键 词：印楝素 分子胶囊剂 研制 活性效应 测定 病虫害防治 

分 类 号：S481.9[农业科学—农药学]