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Simultaneous transport of surface salts and water through unsaturated soils during infiltration and redistribution

 

作者: Mohinder Singh,   I.S. Dahiya,   Mahendra Singh,  

 

期刊: Communications in Soil Science and Plant Analysis  (Taylor Available online 1979)
卷期: Volume 10, issue 3  

页码: 591-611

 

ISSN:0010-3624

 

年代: 1979

 

DOI:10.1080/00103627909366921

 

出版商: Taylor & Francis Group

 

关键词: Simultaneous transport of salt and water;transient unsaturated flow;transient and steady infiltration;redistribution;salt peak

 

数据来源: Taylor

 

摘要:

Certain concepts regarding the simultaneous transport of surface ‐salts and water under transient unsaturated flow conditions vere verified for three soils using laboratory soil columns. Treatments included different water application rates (i.e., continuous ponding and controlled rates) and different initial soil water contents. Calcium chloride, spread on the soil surface to simulate a salt‐affected soil or broadcasting of a fertilizer (or other additive), was leached with chloride free water (0.01 N CaSO4). Salt and water profiles were determined by destructive sampling at 2 cm depth intervals at two stages: (i) immediately following infiltration and (ii) after Batching infiltration plus redistribution time.

 

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