【摘要】 采用四元二次正交回归旋转组合设计方法,建立了渝薯303的密度、氮、磷、钾肥四因素的综合效应产量模型,评价了各因素对产量的贡献,其大小顺序为:硫酸钾>密度>尿素>过磷酸钙。通过计算机模拟,筛选出每666.7m2产量3500kg以上的农艺组合方案。更多还原

【Abstract】 The synthetic efficiency model with four factores (X 1:density; X 2:nitrogen; X 3:phosphorus; X 4:potassium) for Yushu 303 was established with rotational design of orthogonal regression of quarternary quadratic form. The agronomic synthetic scheme with which the land produced more than 3 500 kg/666.7m 2 was selected, and the efficiency of every single factor and their interaction for every agronomical practice were analysed by computor simulation. The order of the contributions of the four factores to the yield was: X 4> X 1> X 3> X 2 .更多还原