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通过最优回归设计田间试验测得的数据 ,建立以皮棉产量为目标函数的氮磷效应模型 ,Y=86.0 4 +5.2 3X1+4.2 6X2 - 5.88X21- 3.62 X22 - 2 .64X1X2 根据模型计算得出最大施肥量为纯 N13.4 6、P2 O511.77kg/ mu,最佳施肥量为 N13.31kg、P2 O511.60 kg/ mu。由最佳氮磷养分合成模型 Y=- 2 .8591Z2 +4.715Z+86.0 4 ,模拟得出不同目标产量的经济最佳纯养分组合及 N、P2 O5最佳施用量 ,便于利用计算机指导棉花优化配方施肥服务
Through the optimal regression design field test data to establish a yield and phosphorus as the objective function of nitrogen and phosphorus effect model, Y = 86.0 4 +5.2 3X1 + 4.2 6X2 - 5.88X21- 3.62 X22 - 2.64X1X2 calculated according to the model The maximum amount of fertilizer was pure N13.4 6, P2 O511.77kg / mu, the best fertilizer N13.31kg, P2 O511.60kg / mu. The optimum combination of N, P2O5 and N, P2O5 was obtained by simulating the best synthetic model of N and P nutrients Y = - 2.8591Z2 + 4.715Z + 86.0 4. Optimized formula fertilizer services