| 棉虫天敌的田间消长及其对害虫的控制作用 |
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| 引用本文： | 陈文华.棉虫天敌的田间消长及其对害虫的控制作用[J].湖北大学学报(自然科学版),1990,12(1):10-15. |
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| 作者姓名： | 陈文华 |
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| 作者单位： | 湖北大学生物系 |
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| 摘 要： | 在所试验的棉田共查得棉虫天敌17科、29属、30种,害虫8科、17属、14种。试验表明,在棉花整个生育期天敌共出现四个高蜂期,其数量随害虫的发生数量增加而增加。天敌对害虫有明显的控制作用。施用化学农药会大量杀伤天敌。不同的施药方式和不同的化学农药对天敌的影响不同。天敌控制一般害虫较控制钻蛀性害虫的作用要明显。
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| 关 键 词： | 棉虫 棉田 害虫 田间消长 生物防治 |
ON THE POPULATION FLUCTUATIONS OF NATURAL ENEMIES OF COTTON PESTS AND THEIR ROLE IN CONTROLING PESTS |
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| Chen Wenhua.ON THE POPULATION FLUCTUATIONS OF NATURAL ENEMIES OF COTTON PESTS AND THEIR ROLE IN CONTROLING PESTS[J].Journal of Hubei University(Natural Science Edition),1990,12(1):10-15. |
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| Authors: | Chen Wenhua |
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| Affiliation: | Department of Biology |
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| Abstract: | Four population peaks of the natural enemies occure in the cotton fields during the whole growth stage of cotton. The population density of the natural enemiesof pests increases with the increase of their pest density. The natural enemies play an important role in controling cotton pests. The insecticide applied to the cotton fields can kill a large number of the natural enemies. The control role of the natural enemies to the common pests is more powerful than that to the borer pests. |
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| Keywords: | Natural enemies Cotton Posts Population Fluctuation Control Role |
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