磁化强度对磁电一体活化水土壤水盐运移特征的影响  

Effect of Magnetization Intensity on Characteristics of Soil Water and Salt Transport in Magnetization-de-electronic Activation Water

作　　者：王全九[1,2] 李宗昱 张继红[1] 解江博 韦开 孙燕 WANG Quanjiu;LI Zongyu;ZHANG Jihong;XIE Jiangbo;WEI Kai;SUN Yan(State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China,Xi’an University of Technology,Xi’an 710048,China;State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau,Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China)

机构地区：[1]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 [2]中国科学院水利部水土保持研究所,黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌712100

出　　处：《农业机械学报》2020年第8期278-284,共7页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金重点项目(41830754);国家重点研发计划项目(2016YFC0501405-04);国家自然科学基金面上项目(51679190);陕西省博士后基金项目(2018BSHEDZZ26)。

摘　　要：磁化与去电子等活化处理技术能够显著提高灌溉水盐分淋洗效率。为了阐明磁化强度对磁电一体活化水土壤水盐运移特征的影响机制,选取不同磁化强度(0、0.1、0.2、0.4、0.8 T)的磁电一体活化水进行一维垂直土柱入渗试验。结果表明,磁电一体活化水可以促进土壤水入渗,提高盐分淋洗效率,并且其效果与磁化强度紧密相关;随着磁化强度的增大,土壤水分入渗量与盐分淋洗效率呈现先增加后减小的二次函数关系,吸湿率S与磁化强度H之间同样呈现良好的二次函数关系。通过试验数据及入渗模型参数分析发现,磁化强度为0.4 T左右时,磁电一体活化水入渗对应的累积入渗量最大、入渗用时最短、土壤含水率最大,而含盐量最小,脱盐效果最好,故可以将0.4 T作为磁电一体活化水的最佳磁化强度。Activation technologies such as magnetization and de-electronation can significantly improve the salt leaching efficiency of irrigation water.In order to clarify the influence mechanism of magnetization intensity on the soil water and salt transport of magnetization-de-electronic activation water,the effect of magnetization intensity on the soil water and salt transport of magnetization-de-electronic activation water was studied by a one-dimensional vertical soil column infiltration test,which was carried out at different magnetization intensities(0,0.1 T,0.2 T,0.4 T and 0.8 T)magnetization-de-electronic activation water.The results showed that the magnetization-de-electronic activation water infiltration could improve the soil water infiltration capacity and salt leaching efficiency,and it was closely related to the magnetization intensity,the soil water infiltration capacity and salt leaching efficiency showed a quadratic function relationship which was increased first and then decreased with the increase of magnetization intensity.Meanwhile,the moisture absorption rate S and the magnetization intensity H also showed a good quadratic function relationship.Through the analysis of test data and the infiltration model parameters,it was found that when the magnetization intensity was about 0.4 T,the cumulative infiltration corresponding to the magnetization-de-electronic activation water infiltration was the largest,the infiltration time was the shortest,the soil water content was the largest,the salt content was the smallest,and the desalination effect was the best.Therefore,0.4 T can be used as the optimal magnetization intensity of magnetization-de-electronic activation water.

关 键 词：磁电一体活化水 磁化强度 水盐运移 盐分淋洗 

分 类 号：S121[农业科学—农业基础科学] S156.4