地下滴灌灌水设计参数对土壤水分分布影响的计算机模拟

Computer Simulation on Soil-Water Movement under the Condition of Different Irrigation Design Parameters in Subsurface Drip Irrigation

利用能模拟地下滴灌系统水流二维运动的HYDRUS - 2D计算机模型在不同的地下滴灌灌水设计参数条件下 ,对土壤水分分布的影响进行了模拟分析。模拟简便、快速、灵活 ,不受试验条件限制。模拟结果表明 ,土壤质地、土壤初始含水率、滴头出流量。

Under the condition of different irrigation design parameters in subsurface drip irrigation (SDI), the soil-water distribution are simulated and analyzed by a HYDRUS-2D computer program, which can simulate the two-dimension soil-water movement of SDI system. The simulation is not only simple, rapid and flexible, but also is not limited by laboratory conditions. Results show that soil texture, initial soil-water content, trickle discharge rate, the trickle-buried depth and so on are all the important parameters that have powerful impacts on soil-water movement of SDI system.