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应用二元二次肥料效应数学模型,根据氮磷化肥用量和蓖麻产量结果,求出波黑钙土10个试验的综合效应方程y=72.0+5.067x_N+5.270x_p+0.1156x_Nx_p-0.3056x~2_N-0.3707x~2_p。用这个方程估测蓖麻产量和实际产量极为接近,可以作为蓖麻施用氮磷化肥推荐量的依据。在资金和化肥充足或短缺时,可以在0≤R≤2区间进行调控用量组合。
Based on the mathematical model of binary fertilization, the comprehensive effect equation of 10 experiments on calcareous soil was obtained according to the amount of nitrogen and phosphorus fertilizer and the output of castor y = 72.0 + 5.067x_N + 5.270x_p + 0.1156x_Nx_p-0.3056x ~ 2_N-0.3707x ~ 2_p. Using this equation to estimate that the castor output is very close to the actual output can be used as a basis for the recommended amount of nitrogen and phosphorus fertilizers applied to castor. In the funds and fertilizers sufficient or short, you can control the amount of 0 ≤ R ≤ 2 interval combination.