基于HYDRUS模型的盐碱地土壤水盐运移模拟

发布时间：2018-04-25 06:54

本文选题：盐碱地 + 水盐运移　；参考：《干旱地区农业研究》2017年01期

【摘要】：为了解陕西卤泊滩盐碱地的水盐运移情况,基于当地2009—2013年田间水盐监测资料,应用饱和-非饱和土壤水分及溶质运移理论,利用HYDRUS-1D数值模型对当地土壤水分、盐分运移规律进行数值模拟,分析了盐碱地的水盐变化状况,确定合理的田间灌水定额。结果表明:在玉米整个生育期内,不同灌溉处理的土壤含水量变化趋势基本一致,从节水控盐的综合标准衡量,农田灌水定额为500 m3·hm-2时有利于控制土壤盐分的累积。采用HYDRUS-1D模型对盐碱地农田土壤水盐运移的模拟结果与田间试验实测结果基本吻合,该研究结果可为类似盐碱化地区农田水盐管理提供科学依据。
[Abstract]:In order to understand the water and salt transport in saline and alkaline land in Hupo Beach, Shaanxi Province, based on the monitoring data of field water and salt from 2009 to 2013, the saturated unsaturated soil water and solute transport theory was applied to the local soil moisture. The HYDRUS-1D numerical model was used to analyze the soil moisture. The salt migration law was simulated and the variation of water and salt in saline-alkali land was analyzed and the rational irrigation quota was determined. The results showed that the variation trend of soil water content in different irrigation treatments was basically the same during the whole growth period of maize. According to the comprehensive standard of water saving and salt control, the irrigation quota of 500m ~ 3 hm-2 was beneficial to control the accumulation of soil salt. The simulated results of soil water and salt transport in saline and alkaline farmland by using HYDRUS-1D model are in good agreement with the measured results of field experiments. The results can provide scientific basis for the management of farmland water and salt in similar salinization areas.
【作者单位】：扬州大学水利与能源动力工程学院;南昌工程学院水利与生态工程学院;西安理工大学西北旱区生态水利工程国家重点实验室培育基地;
【基金】：国家自然科学基金(51279159) 江苏高校优势学科建设工程资助项目(PAPD) 江西省科技厅科技支撑计划项目(20151BBF60012)
【分类号】：S156.4

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