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６６６．７ｍ２产量４５０ｋｇ以上时三者的适宜范围。并求出最大解４７２ｋｇ时，每６６６．７ｍ２施氮１０．３２ｋｇ、五氧化二磷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。
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.
出处
《山东农业大学学报（自然科学版）》
CSCD
1997年第3期281-288,共8页
Journal of Shandong Agricultural University：Natural Science Edition
关键词
冬小麦
高产
栽培
氮
磷
密度
数学模型
winter wheat (Triticum aestivum L.)
high-yield cultivation
nitrogen
phosphorus and sowing density
design of regression
mathematical model
