干旱内陆河灌区灌溉入渗系数的测定与计算

Measurement and Calculation of Irrigation Infiltration Coefficient in Arid Inland River Irrigation Area

在深入分析灌溉水入渗和再分布过程的基础上,依据包气带水量平衡原理,提出了一种根据土壤剖面含水率和同步地下水埋深资料计算灌溉入渗系数的方法。应用事例表明,方法简单可行,易于推广应用。

Irrigation infiltration is the main source of ground water recharge in arid inland river irrigation area.Irrigation infiltration coefficient is an important index affecting the intensity of irrigation in farm field,its value is related to the assessment accuracy and utilization.In this the process of infiltration and redistribution of irrigation water,based on the principle of water balance,a method of calculating the irrigation infiltration coefficient is present,by using the soil moisture content of soil profile and depth of groundwater table at the same time.The case study shows that the method is workable and has practice value.