稻麦作物净初级生产力模型研究:模型的建立

Simulating Net Primary Production of Rice and Wheat Crops: Model Establishment

以植物生理学、农业气象学和土壤环境学的基本原理为基础 ,建立了稻麦作物净初级生产力模型 .该模型包括 2个主要功能模块 :光合作用和呼吸作用 ;土壤 作物系统氮素运移 .前者综合考虑了环境因子和作物氮含量的影响 ,后者包括了作物氮素吸收、土壤氮矿化和化肥氮释放的动态模拟 .

On the basis of the principles of plant physiology, agro-meteorology and soil environment, net primary production of rice and wheat crops was modeled. The model includes two main functional modules: photosynthesis and respiration, and nitrogen transport within soil-plant system. The processes of photosynthesis and respiration are driven by environmental variables and plant nitrogen content. The transportation of nitrogen within soil-plant system is determined by simulating the processes of crop nitrogen uptake, soil nitrogen mineralization and synthetic nitrogen release.