河套灌区畦田内不同位置土壤入渗特性及影响因素分析

为明确河套灌区畦田田块不同位置土壤的入渗特性,通过野外试验和室内检测对试验区田块不同位置土壤理化性质和入渗过程进行分析,并基于土壤入渗模型对试验区田块不同位置的土壤入渗过程进行拟合,同时探讨影响土壤入渗过程的影响因素.研究结果表明:试验区田块内不同位置土壤理化性质及入渗特性具有一定差异性且不同位置土壤入渗特性与土壤理化...

Analysis of Soil Infiltration Characteristics and Influencing Factors at Different Locations in Fields at Hetao Irrigation District

In order to clarify the infiltration characteristics of the soil at different locations in the field at Hetao Irrigation District,the infiltration process of the soil at different locations in the experimental area were analyzed based on the soil infiltration model to fit the infiltration process.The results show that infiltration characteristics of soil at different locations are closely related with its physical and chemical properties;the infiltration rate of the head of border is 1.42 and 1.81 times of that of the middle and the tail of border,respectively.The infiltration coefficient and the stable infiltration rate show the change characteristics of the head of the border>the tail of the border>the middle of the border,and the cumulative infiltration volume and the initial infiltration rate show the change characteristics of the head of the border>the middle of the border>the tail of the border.The results also show that Horton model simulation parameters have a smaller deviation from the measured values,and is suitable for describing the soil infiltration process in the field.