夏谷种植密度与产量预测模型的研究

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夏谷种植密度与产量预测模型的研究

作者:刘红霞刘恩魁刘环(等)

来源:《天津农业科学》2013年第02期

摘要:采用田间小区试验和非线性回归分析的方法,对作物的密度与产量的经验模型进

行模拟和比较。结果表明:二次曲线模型运算简洁、可操作性强,是模拟谷子密度与产量关系的最优模型。谷子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。

关键词:谷子;种植密度;产量;预测模型

中图分类号:S515文献标识码:A DOI编码:10.3969/j.issn.1006-6500.2013.02.021

Study on Prediction Model of Planting Density and Yield in Summer Sowing Foxtail Millet

LIU Hong-xia1, LIU En-kui2, LIU Huan3, ZHANG De-rong2, LIU Yong-ping2, HOU Sheng-lin4, SONG Yin-fang4, WANG Xin-yu4, ZHOU Han-zhang4

(1.Vocational and Technical Education Center of Shenze County,Shenze, Hebei 052560,China;2.Agricultural and Animal Husbandry Bureau of Wu'an County,Wu'an, Hebei 056300,China; 3.Agricultural Bureau of Shenze County,Shenze, Hebei 052560, China; 4.Institute of Millet of Hebei Academy of Agricultural and Forestry Science, Shijiazhuang, Hebei 050031,China)

Abstract: 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 summer sowing foxtail millet planting density on 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 operation concise, the maneuverability was strong,was considered the optimal model that the foxtail millet density and yield relate.

Key words: foxtail millet; planting density; yield; prediction model

谷子是我国主要粮食作物之一,具有抗旱耐瘠、适应性强、水分利用效率高、营养丰富、粮草兼用的特点[1]。多年来,谷子栽培一直存在种植密度不甚合理的技术问题。有关种植密

度与作物产量关系的研究,国内外已有报道[2-4]。1964年许章全等[5]报道了春玉米密植定额和种植方式研究,研究了密度与产量间的关系,提出了二次曲线回归方程及其预测最适密度的经验公式。1987年丁昌龄[6]报道了密度-产量的理论曲线方程,构建了异形双曲线预测模型,

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