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目的:研究北方半夏在人工栽培条件下产量与施肥的数学模型,以指导大田科学施肥。方法:试验采用3因素5水平2次通用旋转组合设计。结果与结论:只有氮(N),磷(P),钾(K)配施,方可实现本试验条件下栽培半夏的最大产量:29 921.4 kg.hm-2;此时施肥量N,五氧化二磷(P2O5),氧化钾(K2O)分别为413.79,224.79,164.01 kg.hm-2,施肥纯收益为475 809.21元/hm2。肥料的主效应P>N>K。
Objective: To study the mathematical model of the yield and fertilization of Pinellia ternata under artificial cultivation in order to guide the field fertilization. Methods: The experiment adopted three factors and five levels and two general rotation combination design. RESULTS AND CONCLUSION: The maximum yield of Pinellia ternata cultivated under this test condition was 29 921.4 kg.hm-2 only with nitrogen (N), phosphorus (P) and potassium (K) P2O5 and K2O were 413.79, 224.79 and 164.01 kg.hm-2 respectively, and the net profit of fertilization was 475 809.21 yuan / hm2. The main effect of fertilizer P> N> K.