KMS Institute of soil and water conservation Chinese Academy of Sciences
| Salt characteristics and soluble cations redistribution in an impermeable calcareous saline-sodic soil reclaimed with an improved drip irrigation | |
| Zhang, Tibin1,2; Zhan, Xiaoyun1; He, Jianqiang4; Feng, Hao1,2; Kang, Yaohu5; Zhan, XY (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China. | |
| 文章类型 | Article |
| 2018 | |
| 发表期刊 | AGRICULTURAL WATER MANAGEMENT
 |
| ISSN | 0378-3774 |
| 通讯作者邮箱 | zhanxiaoyun2005@163.com |
| 卷号 | 197页码:91-99 |
| 摘要 | Saline-sodic and sodic soils are characterized by the occurrence of excessive Na+ that adversely affect soil properties. Takyric solonetz, a saline-sodic soil with a poor structure, a low permeability (saturated hydraulic conductivity <0.1 mm d(-1)) and a considerable CaCO3, widely distributes in arid regions, Northwest China. A 3-year field experiment was conducted toreclaim this impermeable saline-sodic wasteland with an improved drip irrigation, where a sand-filled niche beneath drip emitter was adopted for ridge cultivation of Lycium barbarum L. Through the extensive sampling in soil transects, the salt characteristics and redistributions of soluble cations were evaluated. Results indicated that the soil properties that hindered takyric solonetz from being reclaimed orderly were, soil salinity, structure, alkalinity, and the concentrations of other ions (e.g. K+). Salt leaching through the water regulation had the highest priority in reclaiming takyric solonetz, and followed by improving soil structure through changing ions composition and reducing soil sodicity. After reclamation, soil Na+ concentrations decreased in root zone, but increased in top layers of ridge slope and furrow, while the increases of K* were only found beneath drip line, behaving little mobility with water flow. Considerable increases of divalent cations (Ca2+ and Mg2+) occurred beneath drip line, but no obvious changes occurred in other regions of soil transect. It was concluded that irrigation water and dissolution of intrinsic CaCO3 provided sufficient Ca2+ to replace the excessive Na+, and the replaced Na+ was leached out of root zone, resulting in a decrease of soil sodicity and improvement of soil structure. The reclamation measures were expected to have good sustainability, which was supported theoretically by the priorities of actions derived from salt characteristics. Thus, this improved drip irrigation provided a potential substitute for the costly amendments to ameliorate impermeable saline-sodic soils, especially with considerable amount of CaCO3. (c) 2017 Elsevier B.V. All rights reserved. |
| 关键词 | Drip Irrigation Soil Permeability Soil Reclamation Takyric Solonetz |
| 学科领域 | Agronomy ; Water Resources |
| DOI | 10.1016/j.agwat.2017.11.020 |
| 收录类别 | SCI |
| 出版地 | PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS |
| 语种 | 英语 |
| WOS记录号 | WOS:000423001400009 |
| 出版者 | ELSEVIER SCIENCE BV |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | sbir.nwafu.edu.cn/handle/361005/7848 |
| 专题 | 水保所科研产出--SCI_2018--SCI |
| 通讯作者 | Zhan, XY (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China. |
| 作者单位 | 1.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 3.Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China 4.Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Tibin,Zhan, Xiaoyun,He, Jianqiang,et al. Salt characteristics and soluble cations redistribution in an impermeable calcareous saline-sodic soil reclaimed with an improved drip irrigation[J]. AGRICULTURAL WATER MANAGEMENT,2018,197:91-99. |
| APA | Zhang, Tibin,Zhan, Xiaoyun,He, Jianqiang,Feng, Hao,Kang, Yaohu,&Zhan, XY .(2018).Salt characteristics and soluble cations redistribution in an impermeable calcareous saline-sodic soil reclaimed with an improved drip irrigation.AGRICULTURAL WATER MANAGEMENT,197,91-99. |
| MLA | Zhang, Tibin,et al."Salt characteristics and soluble cations redistribution in an impermeable calcareous saline-sodic soil reclaimed with an improved drip irrigation".AGRICULTURAL WATER MANAGEMENT 197(2018):91-99. |
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