膜沟灌溉入渗规律试验初报

膜沟灌溉是与地膜覆盖技术相结合的沟灌，它将带有渗水孔的地膜敷贴在灌水沟内形成膜沟，灌溉时水在沟内的膜上流动，并通过膜孔渗入土壤。针对膜沟灌溉的累积入渗量、湿润深度随入渗历时变化规律进行了研究。研制了膜沟灌溉入渗试验装置，针对2排3列膜孔布置方案进行了膜沟灌溉入渗试验，观测得到了不同入渗历时的累积入渗量和湿润深度。结果表明，累积入渗量与入渗历时之间的关系符合Kostiakov-Lewis模型，湿润深度随入渗历时的变化符合幂函数关系，因此可用该2个模型描述膜沟灌溉的入渗规律。

An experimental study on infiltration of film-furrow irrigation

Film-furrow irrigation is a combination of techniques of film-mulching irrigation and furrow irrigation. Film with infiltration holes is covered in furrows and irrigation water flow on it and infiltrate to soil. The relations between cumulative infiltration and wetted depth and infiltration time are investigated in this paper. An infiltration tester for film-furrow irrigation is developed, an experiment with 2-row and 3-column holes is conducted, and cumulative infiltration and wetted depth at deferent time are observed. The results show that the relation between cumulative infiltration and infiltration time can be fitted with the Kostiakov-Lewis model, the relation between wetted depth and infiltration time can be fitted with a power function; therefore infiltration of film-furrow irrigation can be described with these two models.