| 小菜蛾自然种群生命表的组建及其分析 |
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| 引用本文： | 张清泉,张雪丽,崔丽丽.小菜蛾自然种群生命表的组建及其分析[J].农家之友,2008(4). |
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| 作者姓名： | 张清泉 张雪丽 崔丽丽 |
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| 作者单位： | 广西大学农学院; |
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| 摘 要： | 通过组建晚甘蓝第三代小菜蛾自然种群生命表,对小菜蛾的种群动态做了研究。结果表明:小菜蛾在卵期存活率最高(99%),在预蛹期死亡率最高(51.2%),主要死亡原因是由于天敌(寄生蜂)的寄生。另外,在第1期幼虫和第2期幼虫的死亡率也相对较高,分别为47%和35.9%。小菜蛾的种群趋势指数(I)小于1,说明小菜蛾的下一代的种群数量呈下降趋势。
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| 关 键 词： | 小菜蛾 自然种群生命表 重要因子分析 种群控制指数 |
Life table building and analysis of natural populationof Plutella xylostella Linnae |
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| Authors: | ZhangQing-quan ZhangXue-li CuiLi-li |
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| Institution: | ZhangQing-quan ZhangXue-li CuiLi-li (Agriculture College Guangxi University Nanning 530004 China) |
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| Abstract: | This text study the population dynamics by building the third generation life table of natural population of cabbage Plutella xylostella Linnae.The result suggest:The livability is the highest during ovigerm Stage,the mortality rate is the highest during pupal period (51.2%),cause of death is autoeciousness by natural enemy (parasiticbee).Moreover,the mortality rate is higher during phase 1 and 2 of larvalphase,it's 47%,35.9% seperately.The population JTI (I)less than 1, this suggest the population quantity... |
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| Keywords: | Plutella xylostella Linnae lifetable of natural population analysis of key factor IIPC of population |
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