Study of the Chemical Characteristics of Salt in Soil and Drainage Water Under Subsurface Drainage and Leaching Conditions
文献类型： 外文期刊
作者： Qian, Yingzhi 1 ; Han, Xudong 1 ; Zhu, Yan 1 ; He, Shuai 2 ; Huang, Jiesheng 1 ;
作者机构： 1.Wuhan Univ, State Key Lab Water Resources Engn & Management, Wuhan, Hubei, Peoples R China
2.Xinjiang Acad Agr & Reclamat Sci, Agr water Conservancy & Soil Fertilizer Res Inst, Shihezi, Peoples R China
关键词： chemical components; critical leaching depth; irrigation quota; leaching ratio; PHREEQC; subsurface drainage
期刊名称：IRRIGATION AND DRAINAGE （ 影响因子：1.7； 五年影响因子：1.7 ）
ISSN： 1531-0353
年卷期： 2025 年
页码：
收录情况： SCI
摘要：
In arid regions, intensive phreatic evaporation plays a significant role in promoting soil salinisation. Subsurface drainage is widely used to mitigate this issue. However, most previous studies focused on total salt and neglected the varying transport capacities of individual components. Studying salt in soil and drainage water from the perspective of salt components and their chemical species is essential. In this study, field experiments under subsurface drainage were conducted, and the contents of major salt components were monitored. The PHREEQC 3.0 model was used to calculate the chemical species contents. Leaching efficiency was quantified via the leaching ratio and critical leaching depth. The results showed that Cl and Na presented the highest leaching efficiencies, which are low for Ca, as 90% of Ca existed in the form of a CaSO4
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