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生态学杂志 ›› 2010, Vol. 29 ›› Issue (05): 973-977.

• 研究报告 • 上一篇    下一篇

马缨丹乳油及其混剂对黄曲条跳甲的拒食活性

田耀加1;张茂新1**;曾 玲1;凌 冰1;董易之2   

  1. 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
  • 出版日期:2010-05-10 发布日期:2010-05-10

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

TIAN Yao-jia1;ZHANG Mao-xin1;ZENG Ling1;LING Bing1;DONG Yi-zhi2   

  1. 1Laboratory of Insect Ecology, South China Agricultural University, Guangzhou 510642, China;2Institution of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou 510642, China
  • Online:2010-05-10 Published:2010-05-10

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48 h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120 h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5.25 μg·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。

关键词: 热带雨林, 树苗, 光, 气孔特性, 可塑性

Abstract: 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.

Key words: Tropical rainforest, Seedlings, Light, Stomatal characteristics, Plasticity