文章摘要
张全菊, 费良军, 刘利华, 陈南束, 郝琨, 李中杰.多因素影响下浑水膜孔肥液入渗土壤水分运移特性[J].水土保持学报,2021,35(1):265~270
多因素影响下浑水膜孔肥液入渗土壤水分运移特性
Soil Water Movement Characteristics in Muddy and Fertilizer Water Solution Infiltration Under Film Hole Irrigation Affected by Multiple Factors
投稿时间:2020-07-10  
DOI:10.13870/j.cnki.stbcxb.2021.01.038
中文关键词: 浑水膜孔灌  肥液入渗  多因素分析  水分运移
英文关键词: muddy water film hole irrigation  fertilizer infiltration  multivariate analysis  water movement
基金项目:国家自然科学基金项目(51479161,51279157,51779205);公益性行业科研专项(201203003)
作者单位E-mail
张全菊, 费良军, 刘利华, 陈南束, 郝琨, 李中杰 西安理工大学省部共建西北旱区生态水利国家重点实验室, 西安 710048 feiliangjun2008@163.com 
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中文摘要:
      为研究不同因素对浑水膜孔肥液入渗土壤水分运动特性的影响,开展室内土箱入渗试验,试验设土壤初始含水率、土壤容重、含沙率和肥液浓度4因素,每个因素设3个水平,共12组试验(9组正交试验,3组验证试验)。分析影响因素对浑水膜孔灌肥液入渗单位膜孔面积累积入渗量、入渗率及湿润体平均体积含水率增量的影响。利用多元回归推求并验证单位膜孔累积入渗量和湿润体平均体积含水率增量与影响因素的经验模型和模型参数。结果表明:土壤初始含水率、土壤容重、含沙率和肥液浓度对单位膜孔累积入渗量影响极显著(P<0.01),各影响因素影响程度由大到小依次为含沙率、土壤容重、土壤初始含水率、肥液浓度;土壤初始含水率、含沙率和肥液浓度对湿润体平均体积含水率增量影响极显著(P<0.01),土壤容重对其影响显著(P<0.05),各影响因素影响程度由大到小依次为土壤初始含水率、肥液浓度、含沙率、土壤容重。建立的经验模型及模型参数检验合格,预测值与实际测算值误差均在±10%以内,精度良好,可用于试验因素不同时土壤水分入渗情况预测。
英文摘要:
      In order to study the influence of multiple factors on soil water movement characteristics of muddy water film hole fertilizer solution infiltration, indoor soil box infiltration test was carried out. Four experimental factors including initial soil moisture content, soil bulk density, sediment concentration of muddy water and fertilizer solution concentration, 3 levels for each factor, and 12 groups of experiments (9 of orthogonal experiments and 3 of validation experiments). The effects of each factor on cumulative infiltration volume per unit membrane hole area, infiltration rate and average volume water content increment of muddy water membrane hole irrigation fertilizer solution were analyzed. The empirical model and model parameters of cumulative infiltration per unit membrane pore and average volume moisture content increment of wetting body with experimental factors were deduced and verified by multiple regression. The results showed that the initial moisture content of the soil, soil bulk density and sand content and fertilizer concentration had a significant effect on the cumulative inlet of the unit membrane hole (P<0.01). The degree of influence from large to small was the sand content, soil bulk density, the initial soil moisture content, the concentration of fertilizer. The increase in the average moisture content of the wet body was almost independent of the permeation time. The initial moisture content, sand content and fertilizer concentration of the soil were significantly related to it (P<0.01), and the soil weight was significantly related to it (P<0.05), and the degree of influence from large to small was the initial moisture content of the soil, fertilizer concentration, sand content, soil bulk density. The empirical model and model coefficient established were qualified. The error between the predicted and the measured values was within ±10%, and the precision was good, which could be used to predict the soil moisture infiltration situation when the experimental factors were different.
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