| 甘肃甘谷县麦蚜种群动态及防治指标初探 |
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| 引用本文： | 李继平,金社林,胡冠芳,万安民.甘肃甘谷县麦蚜种群动态及防治指标初探[J].植物保护,1995,21(2):2-4. |
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| 作者姓名： | 李继平 金社林 胡冠芳 万安民 |
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| 作者单位： | 甘肃省农科院植保所，中国农科院植保所 |
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| 摘 要： | 本文通过1991～1994年甘谷县麦蚜田间系统调查和大田普查，明确了麦蚜的种群结构和消长动态及天敌与麦蚜的跟随关系。并建立了麦蚜混合种群数量与产量损失率的回归模型即Y＝0.3591+0.001897x，依次确定了小麦穗期混合麦蚜种群的防治指标为百株蚜量1000头。
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| 关 键 词： | 麦蚜 种群动态 防治指标 |
A Preliminary Study on the Population Dynamics and the Economic Threshold of Wheat Aphids in Gangu Coun-ty, Gansu Province. |
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| Li Jiping Jin Shelin Hu Guanfang ;Wan Anmin..A Preliminary Study on the Population Dynamics and the Economic Threshold of Wheat Aphids in Gangu Coun-ty, Gansu Province.[J].Plant Protection,1995,21(2):2-4. |
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| Authors: | Li Jiping Jin Shelin Hu Guanfang ;Wan Anmin |
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| Institution: | Institute of Plant Protection;Gansu Academyof Agricultural Sciences;Lanzhou 730070Institute of plant protection;CAAS. |
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| Abstract: | This paper deals with the population structure and dynamics
of wheat aphids as well as the density-depondance relationship between wheat aphids and
their natural enemies,and establishes the regression model ofmixed population of wheat
aphids and relating yield loss, that is,Y=0.3591 0.001897X. The economicthreshold of mixed
wheat aphids during the earing stage of wheat was proposed as 1000 aphids per 100
wheatplants. |
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| Keywords: | wheat aphids population dynamics economic threshold |
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