| 小麦产量与氮,磷,密度三因素数学模型的优化解析 |
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| 引用本文： | 田奇卓,张振兴.小麦产量与氮,磷,密度三因素数学模型的优化解析[J].山东农业大学学报(自然科学版),1997,28(3):281-288. |
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| 作者姓名： | 田奇卓 张振兴 |
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| 作者单位： | [1]山东农业大学农学系 [2]平原县农业局 |
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| 摘 要： | 本研究采用二次通用旋转回归设计测得参数，建立了氮、磷肥、种植密度与产量等指标的数学模型，得出三者对产量的影响为：磷肥〉种植密度〉氮肥；通过模拟筛选出每６６６．７ｍ＾２产量４５０ｋｇ以上时三者的适宜范围。并求出最大解４７２ｋｇ时，每６６６．７ｍ＾２施氮１０．３２ｋｇ，五氮化二磷６．１４ｋｇ，基本苗８．９６万，及其相应的最大群体，叶面积系数，产量构成因素指标，同时还对各因子的独立及交互效应进行了分析。
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| 关 键 词： | 冬小麦 高产 栽培 氮 磷 密度 数学模型 |
OPTIMIZATION AND ANALYSIS OF MATHEMATICAL MODLE ON THE WINTER WHEAT YIELD TO THE SOWING DENSITY,NITROGEN,AND PHOSPHORUS |
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| Tian Qizhuo,Qi Xinhua,Chen Maoxue Zhang Zhenxing,Li Lianfeng.OPTIMIZATION AND ANALYSIS OF MATHEMATICAL MODLE ON THE WINTER WHEAT YIELD TO THE SOWING DENSITY,NITROGEN,AND PHOSPHORUS[J].Journal of Shandong Agricultural University,1997,28(3):281-288. |
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| Authors: | Tian Qizhuo Qi Xinhua Chen Maoxue Zhang Zhenxing Li Lianfeng |
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| Abstract: | The mathematical model for desecribing the relationships of grain yield to the sowing density,nitrogen,and phosphorus fertilizes rate applied was established by means of the design of the current rotation-regression combination in this study.It was shown that the effect on the grain yield may be in order phosphorus fertilizer>sowing density>nitrogen fertilizer.The suitable range of the sowing density,nitrogen and phosphorus fertilizer rate applied,in which 450kg/666 7m 2 or more grain yield of wheat can be gotten,was obtained by the screening out through the mathematical model.And the optimal agrotechniques combination for 472 was 10.32kg/666 7m 2 of nitrogen(N), 6.14kg /666 7m 2 of phosphorus(P 2O 5), 89600 plants/666 7m 2 of sowing density and its maximum colony,coeffcient of leaf area,factors of component yield.Furthermore,the main effects and the interaction effects of the three factors mentioned above were estimated as well. |
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