地下滴灌条件下土壤水分研究概况

A Review of Research on Soil-Water Movement in Subsurface Drip Irrigation

介绍了地下滴灌条件下土壤水分运动的常用模型平面流模型和柱状流模型,详细说明了模型提出的理论、应用条件及存在的弊端;并且简要介绍了众多学者围绕该模型展开的相关研究,及在此基础上进行的对模型的改善工作。同时,文章就地下滴灌条件下土壤水分运动的试验研究展开了论述,从湿润体的形状、湿润峰的运移、滴头流量及灌溉制度等方面介绍了近年来一些学者的研究成果。在此基础上,简要分析了存在的问题和以后研究的发展方向。

Two kinds of mathematical models for simulating soil-water movement in subsurface drip irrigation, namely plan flow and column flow models, were introduced in this paper. Also, the theory, precondition and shortcoming of the models were expounded in detail. Furthermore, some extending research and development on the models were introduced briefly. At the same time, the article described the latest experimental research achievement from the aspects of wetness shape, movement of soil water, flux of emitter, irrigation schedule, and so on. Based on above analysis, the existing problems and research direction were pointed out in the end.