张珂萌,牛文全,汪有科,薛万来,张子卓.微咸水微润灌溉下土壤水盐运移特性研究[J].农业机械学报,2017,48(1):175-182.
ZHANG Kemeng,NIU Wenquan,WANG Youke,XUE Wanlai,ZHANG Zizhuo.Characteristics of Water and Salt Movement in Soil under Moistube-irrigation with Brackish Water[J].Transactions of the Chinese Society for Agricultural Machinery,2017,48(1):175-182.
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微咸水微润灌溉下土壤水盐运移特性研究   [下载全文]
Characteristics of Water and Salt Movement in Soil under Moistube-irrigation with Brackish Water   [Download Pdf][in English]
投稿时间:2016-07-05  
DOI:10.6041/j.issn.1000-1298.2017.01.023
中文关键词:  矿化度  入渗  水盐分布  微润灌溉
基金项目:“十二五”国家科技支撑计划项目(2015BAC01B03)和陕北水蚀区植被功能调控技术与示范项目(2015BAC01B03)
作者单位
张珂萌 西北农林科技大学 
牛文全 西北农林科技大学 
汪有科 西北农林科技大学 
薛万来 西北农林科技大学
北京市水科学技术研究院 
张子卓 西北农林科技大学 
中文摘要:为探明土壤水分和盐分在利用微咸水进行微润灌溉条件下的运移情况,采用室内土箱模拟试验方式,设置2.0、2.5、3.0、3.5、5.0g/L 5种不同矿化度处理,以蒸馏水处理作对照,共入渗72h。结果表明:入渗结束时在不同方向上的最大运移距离随矿化度增大呈先增大后减小趋势,在3.0g/L处理下达到最大值,且微咸水处理的湿润锋运移距离均大于蒸馏水处理;将累积入渗量代入Kostiakov入渗公式,入渗系数随矿化度的增大呈先增大后减小趋势,入渗指数不断减小;土壤电导率以微润带为轴心向四周不断增大,在湿润锋处达到最大值,脱盐区与湿润体形状相关,呈圆环状分布;入渗结束后土壤剖面平均含盐量与蒸馏水处理之间无显著性差异,脱盐半径随矿化度的增大呈线性递减趋势;利用微润灌进行灌溉,土壤盐分存在表聚和底聚现象,且表层积盐更为严重。
ZHANG Kemeng  NIU Wenquan  WANG Youke  XUE Wanlai  ZHANG Zizhuo
Northwest A&F University,Northwest A&F University,Northwest A&F University,Northwest A&F University;Beijing Water Science and Technology Institute and Northwest A&F University
Key Words:mineralization degree  infiltration  distributions of water and salt  moistube-irrigation
Abstract:In order to explore the movement characteristics of water and salt in soil under moistube-irrgation with brackish water, an indoor soil box simulation experiment was conducted under five different mineralization degree treatments with distilled water as control in 72h. The results showed that with the rise of mineralization degree, the maximum migration distance presented a trend of first increase and then decrease in different directions and reached the highest when the degree of mineralization was 3.0g/L. And the distances of wetted front under treatments of brackish water were all greater than that of distilled water. Then the cumulative infiltration was substituted into the Kostiakov infiltration equation and the infiltration coefficient showed a trend of rise first and then fall with the increase of mineralization degree, while infiltration index continued to decline. The soil conductivity was increased constantly to all around with the moistube-irrgation zone as axis and reached the peak at the wet front. The desalting area was related to the shape of the wetted body and distributed in circular shape. There was no significant difference in the average salt content of soil profile between brackish and distilled water after infiltration. The desalination radius was decreased linearly with the increase of mineralization degree. Both surface and bottom convergence phenomenon existed and the salification in soil surface was more serious under moistube-irrgation.

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.

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