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通过\\\"3414\\\"小区试验,可获得马铃薯氮、磷、钾三元二次效应方程:y=1167.145+360.14X1-29.94X1~2+45.9194X2-10.68X2~2-24.8012X3-4.726X3~2-36.242X1X2+0.7736X1X3+16.67X2X3
The quadratic quadratic equation of nitrogen, phosphorus and potassium in potatoes can be got through \"3414\" plot experiment: y = 1167.145 + 360.14X1-29.94X1 ~ 2 + 45.9194X2-10.68X2 ~ 2-24.8012X3-4.726X3 ~ 2-36.242X1X2 + 0.7736X1X3 + 16.67X2X3