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简述了ＯＲＹＺＡ０模型的建模理论和模型应用．模型能系统分析氮素在作物－土壤－大气系统中的复杂行为．因此，能用于模拟作物的氮素吸收和干物质形成过程．模型与Ｐｒｉｃｅ数学优化程序结合，能制定为取得模拟生物量或经济产量所需的最佳氮管理方案．验证结果表明，模型推荐的氮肥管理方案较当地常规氮管理方法具有显著的节氮增产作用．此外，还就模型的进一步完善提出了建议
The modeling theory and model application of ORYZA0 model are briefly described. The model systematically analyzes the complex behavior of nitrogen in crop-soil-atmosphere systems. Therefore, it can be used to simulate crop nitrogen absorption and dry matter formation process. The model, combined with the Price math optimization program, can develop the best nitrogen management solution required to achieve simulated biomass or economic yield. The verification results show that the proposed nitrogen management scheme has a significant nitrogen yield increase compared with conventional nitrogen management. In addition, suggestions for further improvement of the model are also provided