| 不同品种的边际效应对玉米产量影响分析 |
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| 引用本文： | 徐艳荣,孙发明,焦仁海,侯宗运,刘兴二,刘武仁.不同品种的边际效应对玉米产量影响分析[J].玉米科学,2010,18(2). |
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| 作者姓名： | 徐艳荣 孙发明 焦仁海 侯宗运 刘兴二 刘武仁 |
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| 作者单位： | 1. 吉林省农科院玉米研究所,吉林,公主岭,136100
2. 吉林省农科院环资中心,长春,130033 |
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| 摘 要： | 在相同密度下研究了7个不同品种从边1行至边5行玉米产量性状的变化.结果表明,从边1行至边5行,单株产量、穗粒数、百粒重逐渐减小,不同品种单株产量、穗粒数、百粒重随边行增加而递减的速度不一样,一般到边3行时减小的速度变缓.穗粒数的减少和百粒重的降低导致了单株产量的降低,穗粒数的减少是单株产量降低的主要因素,边际效应较小的品种单株产量降低的主要因素是百粒重的降低.
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| 关 键 词： | 玉米 边际效应 产量 |
The Influence Analysis for the Marginal of Different Varieties on Maize Yield |
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| Abstract: | In this study, maize yield traits were analyzed for 7 different varieties from the first row to the edge five rows in the same density.The main results showed that yield per plant, grain numbers per ear and 100- kernel weight decreased gradually with rows increasing.But speed reduced may related with different variety.Different maize variety had different the marginal effect.Reduction of grain numbers per ear and 100- kernel weight led to reduction of yield per plant.Reduction of grain numbers per ear was major factor in reducing yield per plant, while reduction of kernel weight to a secondary factor.But there were also the opposite phenomenon, which appeared some variety had smaller marginal effect. |
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| Keywords: | Maize Marginal effect Yield |
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