印楝素乳油对斜纹夜蛾的生物活性及田间防效研究

应用生态学报 ›› 2005, Vol. 16 ›› Issue (6): 1095-1098.

印楝素乳油对斜纹夜蛾的生物活性及田间防效研究

戴建青^1,2, 黄志伟^1,2, 杜家纬¹

1. 中国科学院上海生命科学院植物生理生态研究所, 上海 200032;
2. 中国科学院研究生院, 北京 100039

收稿日期:2004-03-10 修回日期:2004-07-05 出版日期:2005-06-15 发布日期:2005-06-15
通讯作者: 戴建青,男,1972年生,在读博士生.主要从事害虫综合防治及化学生态学研究,发表论文4篇.Tel:021-54924042;E-mail:jqdai@sibs.ac.cn
基金资助:
上海市农委项目(023112016)、上海市科委项目(023912004)和中国科学院知识创新工程资助项目(KSCX2-2-02).

Bioactivity of azadirachtin and its field efficiency against Spodoptera litura

DAI Jianqing^1,2, HUANG zhiwei^1,2, DU Jiawei ¹

1. Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China;
2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China

Received:2004-03-10 Revised:2004-07-05 Online:2005-06-15 Published:2005-06-15

摘要/Abstract

摘要： 在室内测定了印楝素乳油对斜纹夜蛾(Spodopteralitura)的生物活性,并进行了田间防治试验.结果表明,印楝素乳油对斜纹夜蛾具有多种生物活性,主要表现在对幼虫的拒食作用、生长发育的抑制作用和一定的毒杀活性,以及对成虫产卵的忌避作用.经印楝素处理后,幼虫平均发育历期延长、幼虫体重、蛹重、化蛹率和蛹羽化率显著低于对照,印楝素乳油12μl·L^-1浓度处理3龄幼虫5和7d后的体重分别是对照组的36.8%和14.5%,而幼虫平均发育历期比对照组延长6d左右,化蛹率和蛹羽化率分别是27.79%和37.23%,显著低于对照组85.66%和82.11%.印楝素对低龄幼虫有一定的毒杀活性,而对高龄幼虫活性则很低.田间防治试验表明,印楝素乳油对斜纹夜蛾种群有良好的控制作用,施药7d后其防治效果要优于化学农药10%除尽悬浮剂.

关键词: 印楝素, 斜纹夜蛾, 生物活性, 拒食作用

Abstract: In this paper,the effects of varying concentration azadirachtin on tobacco cutworm Spodoptera litura were investigated in both laboratory and field.The results showed that azadirachtin exhibited a wide range of bioactivities,including anti-feeding,growth inhibition,larval toxicity,and oviposition deterrent.This compound could significantly reduce pupal weight and pupation and eclosion rates.After treated with 12 μl·L^-1 azadirachtin for 5 and 7 days,the third instar larvae only weighted 36.8% and 14.5% of the untreated ones,and their development took approximately 6 days longer,with a 27.79% pupation rate and a 37.23% emergence rate,significantly lower than the control by 85.66% and 82.11%,respectively.Azadirachtin was more efficient for the low instar larva than the old ones.Field experiments confirmed that after 7 days application,azadirachtin could effectively control Spodoptera litura,being more efficient than the chemistry pesticide,10% Chu-Jin SC.

Key words: Azadirachtin, Spodoptera litura, Bioactivity, Anti-feeding effect

中图分类号:

S436.36

戴建青, 黄志伟, 杜家纬. 印楝素乳油对斜纹夜蛾的生物活性及田间防效研究[J]. 应用生态学报, 2005, 16(6): 1095-1098.

DAI Jianqing, HUANG zhiwei, DU Jiawei . Bioactivity of azadirachtin and its field efficiency against Spodoptera litura[J]. Chinese Journal of Applied Ecology, 2005, 16(6): 1095-1098.

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