【摘要】 根据作物生长的特点及影响作物产量的主要因素 ,采用相对腾发量作为水分亏缺影响函数 ,并引入肥料效应函数 ,建立了修正 Morgan模型。该模型可模拟干物质的积累过程对水、肥的响应 ,跟踪作物生长过程 ,动态仿真性强 ,可进行实时操作 ,为科学节水、合理施肥提供依据 ;且该模型所用参数相对较少 ,易于使用更多还原

【Abstract】 Based on crop growth characteristics and the main factors influenced crop yields, a modified Morgan model is developed in this paper established. In the new model, relative evapotranspiration is used as independent variable in place of relative sol moisture in water stress function, and a fertilizer function is incorporated. Comparing with original Morgan model, parameters in modified Morgan model are easier to get, specially for paddy rice. A case study shows that the modified Morgan model is more feasible and practicable.更多还原