排灌机械工程学报
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排灌机械工程学报  2017, Vol. 35 Issue (3): 248-255    DOI: 10.3969/j.issn.1674-8530.16.0092
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一维代数模型在重度盐碱土微咸水灌溉中的适用性
赵连东1, 高佩玲1,2, 王乃江1, 刘小媛1, 杨大明1, 刘全忠2
1.山东理工大学农业工程与食品科学学院, 山东 淄博 255049; 2.山东理工大学资源与环境工程学院, 山东 淄博 255049
Applicability of one dimensional algebraic model in brackish water irrigation of severe saline-alkali soil
ZHAO Liandong1, GAO Peiling1,2, WANG Naijiang1, LIU Xiaoyuan1, YANG Daming1, LIU Quanzhong2
1.School of Agricutural Engineering and Food Science, Shandong University of Technology, Zibo, Shandong 255049, China; 2.School of Resources and Environmental Engineering, Shandong University of Technology, Zibo, Shandong 255049, China
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摘要 为了验证一维代数模型对微咸水在重度盐碱土入渗的适用性,以重度盐碱土为研究对象,设置不同矿化度水平(2,3,4,5 g/L)的微咸水进行室内垂直一维积水入渗试验.利用湿润锋和入渗率、湿润锋和累积入渗量之间的关系推求模型参数,对入渗历时和土壤剖面含水率进行数值模拟,采用符合度指数和均方根误差评价模型适用性.结果表明,入渗历时的均方根误差RMSE均小于6.7 min,入渗历时模型的符合度指数D均超过0.99;含水率的均方根误差RMSE小于3.5%,含水率模型的符合度指数D均在0.90以上;说明一维代数模型能够有效地描述微咸水在重度盐碱土中的入渗过程,对入渗结束后土壤剖面上水分分布情况具有较高的模拟精度.
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赵连东
高佩玲
王乃江
刘小媛
杨大明
刘全忠
关键词微咸水灌溉   一维代数模型   盐碱土   矿化度   入渗历时   体积含水率     
Abstract: In order to verify the applicability of one dimensional algebraic model in brackish water irrigation of severe saline-alkali soil, one dimensional infiltration experiments are conducted in laboratory on saline-alkali soil with different levels of mineralization degree(2, 3, 4 and 5 g/L). The model parameters are decided by means of experimental relationships between infiltration rate and wetting front as well as cumulative infiltration. Then infiltration time history and moisture content of soil profile are simulated numerically with the model. The root mean squared error(RMSE)and the index of agreement(D)are chosen to evaluate the applicability of the model. The results show that all the RMSE of infiltration time is less than 6.7 min; all the D produced by infiltration time model is more than 0.99. All the RMSE of water content is <3.5%; all the D produced by water content model exceeds 0.90. This suggests that one dimensional algebraic model can effectively describe the infiltration process of severe saline-alkali soil, this model also can simulate water distribution in soil profile more accurately after an infiltration ends.
Key wordsbrackish water irrigation   algebraic model for one dimensional infiltration   saline-alkali soil   mineralization degree   infiltration time   soil water content   
收稿日期: 2016-04-29;
基金资助:国家水体污染控制与治理科技重大专项(2015ZX07203-007);山东省自然科学基金资助项目(ZR2016EEM34);山东省研究生教育创新计划项目(SDYY14093);国家级大学生创新创业训练计划项目(201510433047)
通讯作者: 高佩玲(1973—),女,新疆石河子人,教授,博士(通信作者,gaoplxj@163.com),主要从事农业水土工程研究.   
作者简介: 赵连东(1992—),男,山东冠县人,硕士研究生(752926826@qq.com),主要从事农业水土工程研究.
引用本文:   
赵连东,高佩玲,等. 一维代数模型在重度盐碱土微咸水灌溉中的适用性[J]. 排灌机械工程学报, 2017, 35(3): 248-255.
ZHAO Lian-Dong-,GAO Pei-Ling-, et al. Applicability of one dimensional algebraic model in brackish water irrigation of severe saline-alkali soil[J]. Journal of Drainage and Irrigation Machinery Engin, 2017, 35(3): 248-255.
 
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