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作者等在《中国果树》1983年3期曾经介绍了“果树试验中回归分析”,它仅是一个白变数对依变数的影响,但是在果树生产和科研中要复杂得多。例如柑桔的品质不单与成熟时某一阶段的降水量有关,同样与温度、光照等有关;着果率与结果枝的长度、粗度、其上叶数(或叶面积)有关,也就是二个以上的自变数与一个依变数的关系,对这类情况的分析,称为多元回归或复回归。因此根据自变数个数有二元、三元……回归。
The author introduced the “regression analysis of fruit tree test” in “China Fruit Tree” 1983, 3, which is only one of the effects of albinos on the dependent variable, but much more complicated in fruit tree production and scientific research. For example, the quality of citrus is not only related to the precipitation at a certain stage of maturity, but also to the temperature, light and the like. The fruit yield is related to the length, thickness and the number of leaves (or leaf area) of the result branches, that is, The relationship between two or more independent variables and one dependent variable. The analysis of such cases is called multiple regression or complex regression. Therefore, according to the number of independent variables binary, ternary ...... regression.