多因素浑水膜孔灌入渗特性分析  

Analysis of infiltration characteristics of muddy water film hole irrigation under multiple factors

作　　者：姜瑞瑞 费良军[1] 傅渝亮[1] 康守旋 刘腾 JIANG Ruirui;FEI Liangjun;FU Yuliang;KANG Shouxuan;LIU Teng(Institute of Water Resource and Hydro-electric Engineering, Xi′an University of Technology, Xi′an, Shaanxi 710048, China)

机构地区：[1]西安理工大学水资源研究所,陕西西安710048

出　　处：《排灌机械工程学报》2020年第4期415-420,共6页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家自然科学基金资助项目(51779205,51279157);国家农业公益项目(201203003—1)。

摘　　要：主要选取土壤容重、土壤初始含水率、膜孔直径和浑水含沙率4个影响因素,研究多个因素综合作用下的浑水膜孔灌单点源入渗特性及分析各因素的敏感性.试验采用正交设计,利用SPSS软件进行多元回归分析,对4个因素影响下的单位膜孔面积累积入渗量进行了回归分析,拟合决定系数R=0.98,表明各影响因素均对浑水膜孔灌单点源入渗有一定影响.利用相对值法分析了各因素入渗参数对单位膜孔累积入渗量的影响程度,且显著程度由大到小依次为膜孔直径、土壤容重、土壤初始含水率、浑水含沙率;利用敏感性指标判断得出在同一入渗时间,各影响因素越大对浑水膜孔灌单点源入渗速率的影响越弱.In order to study the single-point-source infiltration characteristics of muddy water film hole irrigation under multiple factors and the sensitivity of each factor,four influencing factors such as soil bulk density,soil initial moisture content,membrane pore dia-meter and sediment concentration of muddy water were selected for indoor experiments.The orthogonal design was applied and regression analysis on the cumulative infiltration amount of the unit membrane pore area under the influence of four factors was performance with SPSS.The fitting decision coefficient R was 0.98,which showed that all the influence factors affected the infiltration of the single-point-source of the muddy water film hole irrigation.The relative value method was used to analyze the influence degree of the infiltration parameters of each factor on the cumulative infiltration of the unit membrane pore,and the significant degree from large to small was the diameter of the membrane hole,the soil bulk density,the soil initial water content and the sediment concentration of the muddy water respectively.The infiltration rate of irrigation point source was weaker.

关 键 词：浑水膜孔灌 多因素 单点源入渗 敏感性 显著程度 

分 类 号：S275.3[农业科学—农业水土工程]