关键词: 最小二乘原理, 随机区组试验, 二次回归分析, 显著性检验

Abstract: By applying the principle of least squares, a quadratic regression analysis method for the results of randomized block design with three experimental factor was proposed, which contains the development of the quadratic regression equation of an experimental yield on the three factors, and the significance tests involved. This method set up a new way to analyze the results of factor experiment. With this method, some new and important imformation can be gotten. In this way, it increases the using efficiency of factor experiment. this Method was illustrated by a husbandry experiment for swine.

Key words: LEAST SQUARES PRINCIPLE, RANDOMIZED BLOCK EXPERIMENT, QUADRATIC REGRESSION ANALYSIS, SIGNIFICANCE TEST