| 新疆棉田烟粉虱自然种群的天敌评价 |
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| 引用本文： | 吴刚,于江南,王登元.新疆棉田烟粉虱自然种群的天敌评价[J].新疆农业大学学报,2008,31(5). |
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| 作者姓名： | 吴刚 于江南 王登元 |
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| 作者单位： | 新疆农业大学,农学院,乌鲁木齐,830052 |
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| 基金项目： | 国家自然科学基金，国家科技支撑计划，新疆科技计划 |
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| 摘 要： | 通过组建烟粉虱自然种群生命表,运用排除作用控制指数(EIPC)评价了天敌对烟粉虱种群的控制作用.结果表明:烟粉虱若虫阶段的捕食性天敌是影响烟粉虱种群数量动态的重要因子.如果排除全部天敌的作用,烟粉虱种群趋势指数将从11.54增长为70.33,结果表明田间天敌在烟粉虱种群的控制中起到了重要作用.运用K值图解法分析棉田烟粉虱的关键虫期和关键因子.结果表明:烟粉虱的蛹期是烟粉虱的关键虫期.在蛹期,寄生性天敌是影响烟粉虱的种群动态的关键因子.
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| 关 键 词： | 烟粉虱 自然种群 天敌评价 |
Evaluation on the Controlling Effect of Natural Enemies on Population of Bemisia tabaci in the Cotton Field of Xinjiang |
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| WU Gang,YU Jiang-nan,WANG Deng-yuan.Evaluation on the Controlling Effect of Natural Enemies on Population of Bemisia tabaci in the Cotton Field of Xinjiang[J].Journal of Xinjiang Agricultural University,2008,31(5). |
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| Authors: | WU Gang YU Jiang-nan WANG Deng-yuan |
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| Institution: | WU Gang,YU Jiang-nan,WANG Deng-yuan(College of Agronomy,Xinjiang Agricultural University,Urumqi 830052) |
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| Abstract: | Life tables of Bemisia tabaci natural population were established in cotton field of Xinjiang,the exclusion index of population control(EIPC) was used to evaluate the controlling effect of natural enemies on population of B.tabaci.The results showed that predatory natural enemies of the nymph of Bemisia tabaci were the important factor influencing the population dynamics of B.tabaci.If all natural enemies were excluded,the population development trend indices(I) of Bmesia.tabaci would be increased from 11.5... |
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| Keywords: | Bemisia tabaci population evaluation of natural enemies |
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