【摘要】 在田间水肥耦合试验的基础上 ,对水分生产函数的概念加以拓宽 ,提出了水分、氮素生产函数的概念 ,并建立了最终产量模型和动态产量模型 ,进行了参数求解 ,模型模拟结果和田间试验结果符合较好。更多还原

【Abstract】 Crop water nitrogen production functions were presented based on the crop’s water production function theories and field water nitrogen interaction experiments A final crop yield model and a dynamic crop yield model were studied in detail Parameters of the dynamic crop yield model were estimated from experimental data provided by J J Groot, the model was tested in Yongledian Beijing, and the good results were obtained更多还原