| 2种生物农药对菜青虫的控制作用及对天敌的影响 |
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| 引用本文： | 高曙晖.2种生物农药对菜青虫的控制作用及对天敌的影响[J].安徽农业科学,2011(17):10310-10311. |
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| 作者姓名： | 高曙晖 |
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| 作者单位： | 安徽省繁昌县农业技术推广中心; |
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| 摘 要： | 目的]研究Bt和阿维菌素对甘蓝田菜青虫种群动态、捕食性天敌群落主要特征指数及天敌一菜青虫益害比的影响。方法]采用药剂处理和系统调查的方法。结果]阿维菌素对菜青虫种群有明显的控制作用，但Bt对菜青虫的防治效果不明显。Bt和阿维菌素处理对甘蓝田捕食性天敌群落的物种丰富度和个体数量有明显的影响，但对菜青虫发生高峰期的天敌一菜青虫益害比无明显影响。结论]Bt和阿维菌素处理可以保护天敌对菜音虫的自然控制作用。
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| 关 键 词： | Bt 阿维菌素 菜青虫 天敌 |
Effects of Two Biological Insecticides on Pieris rapae and Its Natural Enemies |
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| GAO Shu-hui.Effects of Two Biological Insecticides on Pieris rapae and Its Natural Enemies[J].Journal of Anhui Agricultural Sciences,2011(17):10310-10311. |
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| Authors: | GAO Shu-hui |
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| Institution: | GAO Shu-hui(Agricultural Technique Extention Station of Fanchang,Fanchang,Anhui 241200) |
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| Abstract: | Objective] The effects of Bt and avermectin on population dynamics of Pieris rapae,the characteristic indices of predatory enemy communities and the ratio of nature enemies to Pieris rapae in cabbage fields were studied.Method] Medicine treatment and systematical investigation were adopted.Result] Avermectin had evident control effect on population growth of Pieris rapae,but the control effect of Bt on Pieris rapae wasn't ideal.Bt and avermectin treatments had obvious negative effects on species richness... |
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| Keywords: | Bt Avermectin Pieris rapae Natural enemy |
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