两种植物提取物不同比例混合对柑橘全爪螨的毒杀活性  

Bioactivity of the Mixture of Two Botanical Pesticide against Panonychus citri

作　　者：刘浩强[1,2] 冉春[1] 李鸿筠[1] 胡军华[1] 姚廷山[1] 

机构地区：[1]中国农业科学院柑橘研究所,重庆400712 [2]国家柑橘工程技术中心,重庆400712

出　　处：《农药》2010年第5期378-379,384,共3页Agrochemicals

基　　金：行业公关科研专项(200903047);重庆市自然基金项目(CSTC2007BB1379)

摘　　要：试验测定了使君子Quisquabis indical和巴豆Croton tiglium在碱水溶液中的提取物对柑橘全爪螨的毒杀活性,并且测定了使君子和巴豆不同比例混合物对柑橘全爪螨的毒杀作用和增效作用。测定结果表明使君子和巴豆的碱水提取液在10mg/L时单独使用对柑橘全爪螨24h的校正死亡率分别为94.50%、100%,不同比例混合试验显示:对柑橘全爪螨触杀毒性最强的是使君子和巴豆提取物以1∶2的比例混合的混合物。其LC50值和LC95值分别为0.8545、2.9500mg/L,混剂的供毒系数为270.2589。此外当使君子和巴豆的提取物以1∶1的比例混合时,其LC50值和LC95值分别为0.8150、3.7843mg/L,混剂的供毒系数为279.8057,说明使君子和巴豆以1∶1到2∶1之间的比例混合时有较强的增效作用。The experiment determined bioactivity of Quisquabis indical and Croton tiglium in alkaline aqueous extract to R cirri meg and synergy of mixture of different ratios Q. indical and C. tiglium to P cirri meg. The results showed that extract of Q. indical and C. tiglium when used 10 mg/L alone after 24 h, corrected mortality to P. cirri meg were 94.50 and 100%. The different combinations of tests had shown： the most toxic to P. cirri meg was Q. indical and C. tiglium in a mixing ratio of 1：2 mixture. The LC50 value and LC95 values were 0.854 5, 2.950 0 mg/L, CTC of mixture was 270.258 9. Furthermore, when making Q. indical and C. tiglium extracts mixed in 1 ： 1 ratio, the LC50 value and LC95 values were 0.815 0, 3,7843 mg/L, CTC of mixture was 279.8057. Instructions to synergies ofQ, indical and C. tiglium between 1：1 to 1：2 mixing ratio were stronger.

关 键 词：使君子 巴豆 柑橘全爪螨 提取物 毒杀活性 增效 

分 类 号：S482.52[农业科学—农药学]