| 一定生态条件下高产玉米若干生育指标的研究 |
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| 引用本文： | 李维典,郑沅.一定生态条件下高产玉米若干生育指标的研究[J].河北师范大学学报(自然科学版),1992,16(2):75-80. |
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| 作者姓名： | 李维典 郑沅 |
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| 作者单位： | 沈阳师范学院，沈阳师范学院 |
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| 摘 要： | 本文从不同种植密度和施氮量对玉米籽粒产量的影响,建立了二次多项式回归方程。根据玉米的干物质重量、叶面积指数和光合势与籽粒产量之间存在着二次曲线的关系,将不同处理组合各生育时期的干物质重、叶面积指数和光合势分别与籽粒产量建立二次方程,并对方程求极值,从而求出耔粒产量最高时的各生育指标,以此做为最优发展动态的指标。本文还对叶面积指数随时间变化的方程的建立,进行了探讨。
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| 关 键 词： | 生态条件 叶面积指数 光合势 玉米 |
Study on the Patterns of Growth Targets for Increasing Yield in Maize under Specified Conditions |
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| Shenyang Teachers College Li Weidian,Zheng Yuan.Study on the Patterns of Growth Targets for Increasing Yield in Maize under Specified Conditions[J].Journal of Hebei Normal University,1992,16(2):75-80. |
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| Authors: | Shenyang Teachers College Li Weidian Zheng Yuan |
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| Institution: | Shenyang Teachers College Li Weidian;Zheng Yuan |
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| Abstract: | Second-degree polynomials equation of maize(Zea Mays L.)grain yield with both planting density and nitrogen fertilization was es- tablished by means of regression analysis.According to quadratic curve correlation between X and Y,quadratic equation were established between X and Y---X standed for dry matter weight,leaf ere index and leaf area duration;Y Standed for grain yield---anda the X values were evaluated at the Y maximum in different growth stages.These X values were regarded as the optimum growth targ- ets.The equation of leaf area index with growth stage was also established in this paper. |
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| Keywords: | maize dry matter weight leaf area index leaf area duration pattern of growth targets second-degree polynomials equation |
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