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笔者用小麦六个农艺性状作为自变数来估测单株产量(依变数),建立六元回归方程,然后对每个因子作显著性测验,剔去不显著因子中偏回归平方和最小的一个因子,重新建立方程,再重新检验,直至方程中所有因子都显著为止.所谓近似于最优回归方程,就是包括所有对依变数影响显著的变数,而不包括对依变数影响不显著的变数的回归方程.本试验研究利用近似于最优回归方程对小麦单株产量进行预测,进而为育种和栽培提供信息. 一、材料和方法在11个小麦品种的随机区组设计、四
The author uses the six agronomic traits of wheat as independent variables to estimate the yield per plant (according to variables), the establishment of six-element regression equation, and then make a significant test for each factor, excluding the least significant factor partial regression of the least squares Factor, re-establish the equation, and then re-test until all the factors in the equation so far so-called approximate optimal regression equation, is to include all variables that significantly affect the dependent variable, not including variables that are not significantly dependent on the variable Regression equation.This study used the approximate regression equation to predict the yield of wheat per plant and provided information for breeding and cultivation.Materials and Methods Randomized block design of 11 wheat cultivars,