马缨丹乳油及其混剂对黄曲条跳甲的拒食活性  

Feeding-deterrent activity of Lantana camara EC and its mixtures against Phyllotreta striolata

作　　者：田耀加[1] 张茂新[1] 曾玲[1] 凌冰[1] 董易之[2] 

机构地区：[1]华南农业大学昆虫生态实验室,广州510642 [2]广东省农科院植物保护研究所,广州510642

出　　处：《生态学杂志》2010年第5期973-977,共5页Chinese Journal of Ecology

基　　金：国家科技支撑计划子项目(2008BADA5B01-01);广东省科技计划重大资助项目(2009A020101001)

摘　　要：测试了自制的12.5%马缨丹乳油对黄曲条跳甲成虫拒食活性、持效性及其与7.5%鱼藤酮乳油、1.5%除虫菊水乳剂、0.3%印楝乳油混配的联合活性。该乳油1000倍液处理菜心叶片后48h对黄曲条跳甲成虫具有40%的拒食率,随着浓度升高,拒食活性增强;200、400和600倍液处理120h后对黄曲条跳甲成虫的累计拒食率分别达到76%、68%和43%。12.5%马缨丹乳油与7.5%鱼藤酮乳油以5∶5比例混配使用时,增效作用最为明显,拒食中浓度AFC50为5.25μg.ml-1,共毒系数CTC为213;与1.5%除虫菊水乳剂以1∶9比例混配使用时的增效作用次之,共毒系数CTC为149;与0.3%印楝乳油以9∶1、7∶3、5∶5、3∶7和1∶9比例混配使用时,其共毒系数CTC均<100,表现为相互拮抗作用。结果表明:12.5%马缨丹乳油对黄曲条跳甲成虫具有强烈的拒食活性,其200倍液和400倍液拒食持效性好,且该乳油可与7.5%鱼藤酮乳油混配使用。In this paper, the feeding-deterrent and persistent activities of 12.5% Lantana camara EC and its mixtures with 7.5% rotenone EC, 1.5% pyrethrum EW, or 0.3% azadirachtin EC against Phyllotreta striolata adults were tested. After treated with 1000-fold dilution of 12.5% L. camara EC for 48 h, the antifeedant rate against P. striolata was 40%, and, with increasing concentration of L. camara EC, the antifeedant rate was increased. After treated with 200-, 400-, and 600-fold dilution of 12.5% L. camara EC for 120 h, the antifeedant rate reached to 76%, 68%, and 43%, respectively. A synergistic effect （AFC50=5.25 μg·ml^-1; CTC=213） and an additive or antagonistic effect （CTC=149 or 100） were observed when the 12.5% L. camara EC was mixed with 7.5% rotenone EC in 5∶5, with 1.5% pyrethrum EW in 1∶9, or with 0.3% azadirachtin EC, respectively. 12.5% L. camara EC had strong antifeedant effect against P. striolata, and had good persistent activity after 200-and 400-fold dilution. It could be also used in combination with 7.5% rotenone EC.

关 键 词：马缨丹 植物保护剂 黄曲条跳甲 拒食活性 

分 类 号：S482.3[农业科学—农药学]