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采用311B最优设计,对玉米新品种沈玉18的需肥参数以及氮磷钾之间关系进行了研究。结果表明:试验得出的效应函数为非典型效应函数,NP之间以及PK之间方程属远外推型函数。PK之间的方程即不属于鞍心双曲线也不属于鞍缘双曲线。采用模型模拟分析得出最高产量的氮磷钾肥组合为:N 225 kg hm-2,P2O5150 kg hm-2和K2O 180 kg hm-2。最高产量为12606.55 kg hm-2。获最高收益时施N2205.7 kg hm-2、施P2O5150 kg hm-2、施K2O 148.9 kg hm-2。
Using 311B optimal design, the relationship between fertilization parameters and nitrogen, phosphorus and potassium of new maize variety Shenyu 18 was studied. The results show that the experimentally derived effect function is an atypical effect function, and the equations between NPs and PKs are far-exponential functions. The equation between PK is neither saddle hyperbolic nor saddle hyperbolic. The highest N, P and K fertilizer combinations were N 225 kg hm-2, P2O5150 kg hm-2 and K2O 180 kg hm-2, respectively. The highest yield is 12606.55 kg hm-2. When the highest yield was obtained, N2205.7 kg hm-2, P2O5150 kg hm-2 and K2O 148.9 kg hm-2 were applied.