四、一元线性与非线性回归分析的计算程序在种质资源问题的分析中,经常遇到一些同处于一个统一体中的两个变量,例如,某一数量性状(千粒重或穗粒数)与产量,抗病性与某一气象要素(温度或湿度),耐盐性与土壤含盐量等等,这两个变量之间存在着一定的关系。这种关系也许是线性的,也许是非线性的。通过试验,得到数据,找出描述它们之间关系的经验公式。以往的方法都是先在坐标纸上找出 Four, a linear and non-linear regression analysis of the calculation program In the analysis of germplasm problems, often encountered with some of the same in a unified two variables, for example, a number of traits (1000-grain weight or grain number) and Yield, disease resistance and a meteorological element (temperature or humidity), salt tolerance and soil salinity, etc., there is a certain relationship between these two variables. This relationship may be linear, perhaps non-linear. Through experiments, we get the data and find out the empirical formula that describes the relationship between them. The previous method is to find out on the coordinate paper first