【摘要】 基于示范区田间试验与数值模拟的方法,考虑冬小麦根系吸水的影响,建立了冬小麦田间土壤水分运动的数学模型;采用差分方法求解了数学模型,并进行了程序设计和程序验证;数值计算结果表明,实测值与计算值有较好的一致性;对不同灌水定额方案作了模拟计算,提出了冬小麦节水灌溉模式。更多还原

【Abstract】 Based on field test of demonstration area and numerical simulation, a soil water movement model is set up. The numerical model is solved by finite difference method and its program is designed, and verified by indoor experiment data. The calculation results showed that the experiment and simulation are basically in accordance. And with winter wheat, a few irrigation quota schemes are numerically simulated, and the saving irrigation model of winter wheat is predicted.更多还原