膜孔灌肥液入渗氮素运移特性研究进展

The Research Advances of Nitrogen Transportation Characteristics under Film Hole Infiltration

膜孔灌土壤入渗为充分供水条件下的空间三维点源入渗,基于膜孔灌已有研究成果的基础上,全面分析了膜孔灌肥液自由入渗、单向交汇入渗和多向交汇入渗的水氮运移特性、水肥耦合特性、影响因素、数学模型等研究进展和存在问题,提出了今后膜孔灌入渗研究的主要方向,为膜孔灌理论与技术的进一步研究奠定了基础。

Film hole irrigation is a spatial 3D point source infiltration under sufficient water supply. On the basis of the past achievements of film hole irrigation, this article summarized the water and nitrogen transport characteristics of free fertilizer solution infiltration, single-line interference infiltration and multiple-line interference infiltration, the water and fertilizer coupling characteristic, influence factors and numerical simulation. Some problems about film hole irrigation were listed to be solved and discussed for the future and a foundation for the further research in theory and technology was made.