| 作物群体边际效应规律及其应用 |
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| 引用本文： | 杜心田,王同朝.作物群体边际效应规律及其应用[J].应用生态学报,1998,9(5):475-480. |
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| 作者姓名： | 杜心田 王同朝 |
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| 作者单位： | 河南农业大学 |
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| 摘 要： | 对作物边际效应的研究表明，有利生态因子的作用大于不利生态因子的作用时，作物群体发生正边际效应，表现为边际优势；不利生态因子的作用大于有利生态因子的作用时，作物群体发生负边际效应，表现为边际劣势．在作物群体内部条件一致的情况下，边际效应的绝对值随边距递增而递减．
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| 关 键 词： | 边际效应 作物群体 边距 |
Edge effect law in crop population and its application. |
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| Du Xintian and Wang Tongchao.Edge effect law in crop population and its application.[J].Chinese Journal of Applied Ecology,1998,9(5):475-480. |
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| Authors: | Du Xintian and Wang Tongchao |
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| Abstract: | Studies on crop edge effect show that when the role of favorable ecological factors on crop population is greater than that of unfavorable ecological factors, the positive edge effect appears and the edge superiority shows; reversely, the negative edge effect appears and the edge inferiority shows. Under the same interior conditions in crop population, the absolute value of edge effect is decreased with increasing edge distance. |
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| Keywords: | Edge effect Crop population Edge distance |
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