EPIC模型中作物生长与产量形成的数学模拟

Simulation equations for crop growth and yield formation in the EPIC model

侵蚀和生产力影响估算模型EPIC是世界上较有影响的水土资源管理和作物生产力评价动力学模型。文章简要介绍了EPIC模型中描述作物生长、产量形成和环境胁迫的主要数学方程,有助于理解EPIC模型模拟作物生长与产量形成的基本原理和基本过程,可供我国作物生长模拟与生产力定量评价研究中借鉴。最后指出了该模型中需要改进之处。

EPIC (Erosion-Productivity Impact Calculator) is a world famous dynamic model that can be used to assess the effect of management strategies on farmland soil and water resources and crop productivity. The math equations to simulate crop growth,yield formation and environment stress in the EPIC model were briefly introduced in this paper. This is good for understanding basic simulating principles and processes of crop growth and yield formation in the EPIC model, and it can be used as reference for crop growth simulation and crop productivity quantitative assessment research. Finally, the further improvements in the EPIC model were pointed out.