土壤地下点源入渗的基本特性研究

The Study of Basic Characteristics Under Subsurface Point Source Infiltration in Soil

基于大量的大田土壤点源入渗试验,提出了地下点源入渗系统的新理念———管道 土壤系统,分析了地下点源入渗中累积入渗量与入渗率随时间的变化过程及入渗界面问题,建立了地下点源土壤入渗模型,并利用数理统计理论证明了该模型的有效性。研究成果对研究土壤水分运动理论和指导农业地下灌溉实践都具有重要的意义。

Based on amounts of point source infiltration experiments in field, this thesis puts forward a new concept--pipeline-soil system about subsurface point source infiltration system, analyzes the changing process of cumulative infiltration capacity and infiltration rate with time, considers the problem of infiltration interface, makes a new model on the subsurface point source infiltration, then testifies its validity using mathematic statistical theory. The thesis will have magnitude meaning in searching soil moisture kinetic theory and guiding agricultural subsurface irrigation.