王全九,许紫月,单鱼洋,张继红.磁化微咸水矿化度对土壤水盐运移的影响[J].农业机械学报,2017,48(7):198-206.
ANG Quanjiu,XU Ziyue,SHAN Yuyang,ZHANG Jihong.Effect of Salinity of Magnetized Brackish Water on Salt and Water Movement[J].Transactions of the Chinese Society for Agricultural Machinery,2017,48(7):198-206.
摘要点击次数: 2266
全文下载次数: 1151
磁化微咸水矿化度对土壤水盐运移的影响   [下载全文]
Effect of Salinity of Magnetized Brackish Water on Salt and Water Movement   [Download Pdf][in English]
投稿时间:2017-03-29  
DOI:10.6041/j.issn.1000-1298.2017.07.025
中文关键词:  磁化微咸水  矿化度  入渗特性  水盐分布
基金项目:国家自然科学基金面上项目(5167090151)和国家重点研发计划项目(2016YFC0501405-4)
作者单位
王全九 西安理工大学
中国科学院水利部水土保持研究所 
许紫月 西安理工大学 
单鱼洋 西安理工大学 
张继红 西安理工大学 
中文摘要:采用300mT磁感应强度恒定磁水器对不同矿化度微咸水(0.14、2、3、4、5g/L)进行磁化处理,并进行一维垂直土柱入渗试验,研究磁化微咸水矿化度对土壤水盐运移的影响。结果表明:微咸水磁化处理后,土壤入渗速率及湿润锋迁移速率显著降低,湿润体含水率显著提高;微咸水矿化度对磁化效果具有显著影响,磁化微咸水矿化度为3g/L时,相同入渗时间累积入渗量和湿润锋深度相对减少量最大,湿润体含水率相对增加量最多。磁化微咸水入渗对Philip和Green-Ampt入渗公式参数有显著影响,相同矿化度的磁化微咸水土壤吸渗率S、饱和导水率Ks及湿润锋处吸力hf均小于未磁化微咸水;磁化与未磁化微咸水相对吸渗率ΔS及相对饱和导水率ΔKs与矿化度之间均呈现较好的二次多项式关系,在矿化度为3g/L时,相对吸渗率ΔS及相对饱和导水率ΔKs均达到最大。磁化微咸水能够提高土壤持水能力,相同土层深度的土壤含水率显著增加;微咸水磁化处理后,脱盐率显著提高,土层深度0~20cm磁化微咸水脱盐率均大于未磁化微咸水,矿化度为3g/L的磁化微咸水磁化脱盐强度最大,相对脱盐效果更好。
ANG Quanjiu  XU Ziyue  SHAN Yuyang  ZHANG Jihong
Xi’an University of Technology;Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources,Xi’an University of Technology,Xi’an University of Technology and Xi’an University of Technology
Key Words:magnetized brackish water  mineralization degree  infiltration characteristics  water and salt distribution
Abstract:The physical and chemical properties of magnetized brackish water changed significantly, so irrigation with such water is likely to influence the characteristics of soil water and salt movement. The constant magnetic water device with magnetization intensity of 300mT was used to magnetize brackish water with different salinities (0.14g/L,2g/L,3g/L,4g/L and 5g/L), and one-dimension vertical water infiltration experiment was conducted to reveal the effects of salinity of magnetized brackish water on water and salt movement in soil. Results showed that the soil infiltration rate and wetting front migration rate were decreased significantly with irrigation by magnetized brackish water, whereas the moisture content of the wetted zone was increased significantly. The salinity of brackish water had significant impact on the magnetic effect. When the salinity of brackish water was 3g/L, the relative reductions of cumulative infiltration and wetting front depth reached the maximum, and the relative increase of moisture content of wetted zone reached the maximum at the same infiltration time. Magnetized brackish water had significant impact on the parameters of Philip and Green-Ampt formulas. The soil sorptivity S, the saturated hydraulic conductivity Ks and the wetting front suction of magnetized brackish water were all less than those of the non-magnetized brackish water. There was significantly quadratic polynomial relationship among the relative sorptivity ΔS, the relative saturated hydraulic conductivity ΔKs and the salinity of brackish water. When the salinity of brackish water was 3g/L, the relative sorptivity ΔS and the relative saturated hydraulic conductivity ΔKs reached the peak value. Moreover, magnetized brackish water could enhance soil water retention capacity, thus the soil moisture content was increased significantly in the same soil depth. Magnetized brackish water could improve the desalination efficiency. In the soil depth of 0~20cm, the desalination efficiency of brackish water was greater than that of the non-magnetized brackish water, and when salinity of brackish water was 3g/L, the magnetic salinity intensity was the strongest, and the relative desalination effect turned out to be better.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

   下载PDF阅读器