基于HYDRUS-2D的微咸水入渗秸秆混掺土壤的过程模拟  

Numerical Simulation of Brackish Water Infiltration Process in Soil Mixed with Pulverized Straw Under HYDRUS-2D

作　　者：古莱姆拜尔·艾尔肯 马合木江·艾合买提[1] 麦麦提吐逊·麦麦提 GULAIMUBAIER·Aierken;MAHEMUJIANG·Aihemaiti;MAIMAITITUSUN·Maimaiti(Department of Civil Engineering and Water Conservancy,Xinjiang Agricultural University,Urvmqi 830052,China)

机构地区：[1]新疆农业大学水利与土木工程学院,新疆乌鲁木齐830052

出　　处：《应用基础与工程科学学报》2022年第1期12-26,共15页Journal of Basic Science and Engineering

基　　金：河海大学水文水资源与水利工程科学国家重点实验室开放研究基金(2016490511);国家自然科学基金项目(51469033)。

摘　　要：国内外专家对微咸水及秸秆还田方面做了大量的研究,但目前,对秸秆还田下的微咸水利用鲜有报道,因此本文通过HYDRUS-2D模型对秸秆混掺条件下土壤入渗过程进行数值模拟,结果表明HYDRUS-2D模型模拟秸秆还田条件下入渗过程中的水盐运移可靠性较高.在模拟结果的基础上对土壤累积入渗量、湿润锋、土壤含水率和含盐率进行分析,结果表明微咸水矿化度3g/L及秸秆混掺比例0.35%时对土壤累积入渗量、湿润锋、入渗率、土壤含水率和含盐率的影响最显著.Experts at home and abroad have done many studies on brackish water and straw returning,but at present,use the brackish water infiltration process in soil mixed with pulverized straw studies are few.In this paper,the HYDRUS-2 D model was used to simulate the brackish water infiltration process in soil mixed with pulverized straw.The results showed that the HYDRUS-2 D model reliably simulated the water and salt migrations in soil mixed with pulverized straw under the condition of saline water irrigation.Based on the simulation results,the soil cumulative infiltration,wetting front,soil moisture content and salt content were analyzed.While the soil salinity was 3 g/L and the straw blending ratio was 0.35%,the effects of seepage,wetting front,infiltration rate,soil moisture content and salt content were most significant.

关 键 词：混掺比例 土壤水盐分布 矿化度 HYDRUS-2D 累积入渗量 湿润锋 入渗率 

分 类 号：S152.7[农业科学—土壤学]