【摘要】 建立了玉米 (ZeamaysL .)生长生理生态学模拟模型 (MPESM)。模型由 5个子模型组成 :1)气象资料形成子模型 ,2 )水分影响子模型 ,3)氮素影响子模型 ,4)玉米发育子模型 ,5 )玉米生长子模型。MPESM具有 5个主要功能 :1)模拟环境条件 (气象因子、土壤湿度和氮素供应 )对玉米生长和发育的影响 ,2 )模拟玉米的发育进程 ,3)模拟玉米的生长过程 ,4)模拟玉米产量形成过程 ,5 )玉米最优化栽培管理决策。介绍了玉米生长生理生态学模拟模型主要结构、假设和处理方法 ,并给出了模型主要数学表达式。利用多年资料对土壤湿度、玉米氮吸收、玉米发育、玉米生长和产量等模拟结果分别进行了验证 ,模拟结果与实测资料基本吻合。更多还原

【Abstract】 Based on some of the best models over the world, after several years’ simulation experimentation and research, a maize (Zea mays L.) physiological_ecological simulation model (MPESM) was built successfully. MPESM consists of five submodels: viz. generation of meteorological data, water effects, nitrogen effects, maize development, and maize growth. Each submodel consists of some specific mathematic models. MPESM is a computerized simulation model bearing five main functions: (1) simulation on the effects of environment (meteorologial factors, soil moisture and nitrogen supply) on maize growth and development; (2) simulation of maize development; (3) simulation of maize growth; (4) simulation of yield formation; (5) decision of optimum maize cultivation management. The major structure, hypothesis, handing procedures and mathematic equations of MPESM are described here. The simulation of soil moisture, nitrogen assimilation, the development, growth and yield of maize were verified to be effective in terms of many years’ experimental data.更多还原