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过去对玉米丰产规律的研究多停留在单因素和线性回归分析的水平上。本试验和本文运用通用旋转组合设计的试验方法,把影响玉米产量的主要定量栽培措施有机肥、磷肥、钾肥、氮肥、密度五个因素综合加以研究,建立了多元二次回归模式,对于它们各自的效应和相互影响作用进行了剖析,比较全面地反映了产量和各因素间的定量关系;在建立回归模型的基础上,用电子计算机选优,选出不同产量水平下,五个栽培因素不同水平组合的较好配方。
In the past, the research on the laws of corn yield stayed at the level of single factor and linear regression analysis. In this experiment and this experiment, we used the universal rotary combination design test method to study the main quantitative cultivation measures that affect the yield of maize, such as organic fertilizer, phosphate fertilizer, potash fertilizer, nitrogen fertilizer and density, and established the multiple quadratic regression model. For each of them, The effects and interactions of the five cultivars were analyzed. The quantitative relationship between production and each factor was fully reflected. Based on the regression model, five different cultivation factors A better recipe for horizontal combinations.