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中国农学通报

中国农学通报 ›› 2013, Vol. 29 ›› Issue (30): 118-123.doi: 10.11924/j.issn.1000-6850.2012-3779

• 农学 农业基础科学 • 上一篇    下一篇

春谷种植密度与产量的数量关系及其分析

刘恩魁 刘红霞 张德荣 刘永平 刘环 侯升林 宋银芳 王新玉 周汉章   

  • 收稿日期:2012-11-21 修回日期:2012-12-13 出版日期:2013-10-25 发布日期:2013-10-25
  • 基金资助:
    广谱型谷田专用除草剂;秋闲田一年生饲料作物优化栽培技术研究与示范

An Analysis of Quantitative Relationships Between the Planting Density and Yield in Spring Foxtail Millet

  • Received:2012-11-21 Revised:2012-12-13 Online:2013-10-25 Published:2013-10-25

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摘要： 为了科学预测谷子的适宜种植密度，探索谷子种植密度与籽粒产量的数学预测模型。采用田间小区试验和非线性回归分析的方法，对主要的密度与作物产量的经验模型进行模拟和比较。结果表明，春谷种植密度对籽粒产量具有重要影响。谷子籽粒产量随着种植密度增加呈先升后降的趋势。二次曲线模型是模拟谷子密度与产量关系的最优模型。春播‘冀谷19’与‘冀谷31’的方程式分别为yj19=2725.528+86.885x-0.701x2与yj31=1289.529+131.318x-1.023x2，理论最适密度分别为61.97万株/hm2与64.18万株/hm2。由此得出，本研究确定的数学预测模型，将为春谷生产提供理论依据。

关键词: 热源性检测, 热源性检测

Abstract: For science forecast that the suitable planting density of the foxtail millet, explores the mathematical prediction model of the foxtail millet planting density and grain yield. The main density on crop yield empirical model, a few fitting models were simulated and compared by employing field plot experiment and nonlinear regression analysis. The results showed that, the foxtail millet planting density on grain yield had important influence. The trend of foxtail millet grain yield with planting density increase was first increased then decreased. Through the model simulation and comparison, quadratic curve model was considered the optimal model that the foxtail millet density and yield relate. Predicted equation of spring sowing ‘Jigu 19’ and ‘Jigu 31’ respectively were yj19=2725.528+86.885x-0.701x2 and yj31=1289.529+131.318x-1.023x2, theoretically optimum density respectively were 619700 plants/hm2 and 641800 plants/hm2. This study had established a mathematical prediction model, which would provide the theoretical foundation for the spring foxtail millet production.