膜孔灌自由入渗条件下VG模型参数的敏感性分析OACSTPCD
Sensitivity analysis of the impact of soil hydraulic parameters on water infiltration from a single point source in membrane-hole irrigation
[目的]探究膜孔灌自由入渗条件下VG模型参数敏感性.[方法]基于HYDRUS-2D软件,采用单因子扰动分析方法,研究van Genuchten方程中α、n、θr对膜孔灌单点源自由入渗特性的影响.[结果]①单位膜孔面积累积入渗量与α负相关,与n正相关,θr对单位膜孔面积累积入渗量无影响.水平湿润锋运移距离与α负相关,θr对其无影响.垂直湿润锋运移距离与 θr负相关,与 n 正相关.入渗结束时高含水率湿润体面积与 θr、n 正相关,n的扰动对高含水率…查看全部>>
[Objective]Water infiltration in soil is an important process for designing drip irrigation and is impacted by soil properties.The purpose of this paper is to investigate the effect of soil hydraulic properties on water infiltration from a single-point source in membrane-hole irrigation.[Method]The studies were based on the HYDRUS-2D software,with the soil hydraulic properties described by the van Genuchten formula.[Result]① The cumulative infiltration amoun…查看全部>>
樊倩雯;费良军;刘念
西安理工大学 西北旱区生态水利国家重点实验室,西安 710048西安理工大学 西北旱区生态水利国家重点实验室,西安 710048榆林市榆阳区水旱灾害防治中心,陕西 榆林 719000
农业工程
模型膜孔灌单点源入渗特性参数
modelmembrane hole irrigationsingle point sourceinfiltration characteristicsparameters
《灌溉排水学报》 2024 (5)
55-62,8
陕西省重大水利科技项目(2023SLKJ-2)国家自然科学基金项目(52079105)
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