【摘要】 试验采用正交旋转回归设计的方法,选取氮(X1)、磷、(X2)、钾(X3)3个因素为决策变量,以甜菜含糖率为目标函数,通过田间试验和实验室化验所获得的数据,建立了甜菜含糖率与参试因子间的数学模型。结果表明,氮磷钾对甜菜的含糖率都有明显的作用,各因子对含糖率的作用效应依次为氮>磷>钾,交互效应的大小依次为氮磷>磷钾>氮钾,且氮磷和磷钾对甜菜的含糖率为负效应。更多还原

【Abstract】 Using the quadratic orthogonal rotation regressional design,selecting nitrogen（x₁）,phosphorus（x₂）,and potassium（x₃）as decision variables,and taking the sugar content as target function,a mathematical model was set up between the sugar content and experimental factors based on the data collected from field and laboratory experiments.The results showed that the effects of applying these fertilizers to the sugar content werer obvious.The effect of the kind of fertilizer was N>P>K,and the interaction effect was NP>PK>NK,and effect of NP and PK interaction was negative.更多还原