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当前位置: 首页 > 文章 > 印楝素与啶虫脒对椰心叶甲生物活性及混配增效作用 江西农业学报 2011,23 (2) 103-105
Position: Home > Articles > Bio-activity and Synergistic Effects of Azadirachtin and Acetamiprid on Brontispa longissima Acta Agriculturae Jiangxi 2011,23 (2) 103-105

印楝素与啶虫脒对椰心叶甲生物活性及混配增效作用

作  者：
吕朝军;钟宝珠;孙晓东;覃伟权;符悦冠;马子龙
单  位：
中国热带农业科学院椰子研究所;中国热带农业科学院环境与植物保护研究所
关键词：
印楝素;啶虫脒;椰心叶甲;生物活性;混配增效
摘  要：
为探讨植物源杀虫剂和常用化学杀虫剂在椰心叶甲防治上的联合利用效果,采用浸叶法和大田药效试验测定了印楝素和啶虫脒对椰心叶甲的生物活性及混配增效作用。结果表明:印楝素和啶虫脒对椰心叶甲4龄幼虫均表现出生物活性,LC50值分别为14.45和9.44 mg/L。混配增效结果表明,以有效成分印楝素∶啶虫脒=2∶5(质量分数)增效作用最强,共毒系数为492.23。大田药效试验结果表明,混配处理组以有效成分印楝素∶啶虫脒=2∶5(质量分数)对椰心叶甲的田间防治效果最好,在浓度为50 mg/L处理7 d后,混配处理组的校正虫口减退率为87.66%,印楝素和啶虫脒单独处理组分别为69.43%和74.35%。
译  名：
Bio-activity and Synergistic Effects of Azadirachtin and Acetamiprid on Brontispa longissima
作  者：
LV Chao-jun1,2,ZHONG Bao-zhu1,2,SUN Xiao-dong1,2,QIN Wei-quan1,2,FU Yue-guan3,MA Zi-long1*(1.Coconut Research Institute,Chinese Academy of Tropical Agricultural Sciences,Wenchang 571339,China;2.Hainan Provincial Key Laboratory for Research of Tropical Palm Plants,Wenchang 571339,China;3.Institute of Environment and Plant Protection,Chinese Academy of Tropical Agricultural Sciences,Danzhou 571737,China)
关键词：
Azadirachtin;Acetamiprid;Brontispa longissima;Bio-activity;Synergism
摘  要：
The bio-activity and synergistic effect of botanical pesticide azadirachtin and chemical pesticide acetamiprid on Brontispa longissima(Gestro) were investigated by leaf-dipping method and field trial.The laboratory results indicated that both azadirachtin and acetamiprid showed toxicity to the 4th instar larvae of B.longissima,and their LC50 value was 14.45 and 9.44 mg/L,respectively.The mixture of azadirachtin and acetamiprid in the proportion of 2∶5(a.i.,w/w) had the strongest synergistic effect against B.longissima,its co-toxicity coefficient(CTC) was 492.23.Field trial results showed that the control effect of azadirachtin mixed with acetamiprid in the proportion of 2∶5(a.i.,w/w) against B.longissima was the best among all treatments.On the 7th day after applying azadirachtin or acetamiprid or their mixture in the proportion of 2∶5(a.i.,w/w) at the dosage of 50 mg/L,the larvae corrected-mortality was 69.43% or 74.35% or 87.66%,respectively.

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