Arid
DOI10.1016/j.agwat.2021.107440
Migration characteristics of soil salinity in saline-sodic cotton field with different reclamation time in non-irrigation season
Zong, Rui; Han, Yue; Tan, Mingdong; Zou, Ruihan; Wang, Zhenhua
通讯作者Wang, ZH
来源期刊AGRICULTURAL WATER MANAGEMENT
ISSN0378-3774
EISSN1873-2283
出版年2022
卷号263
英文摘要Cultivation after converting saline and alkaline wasteland to agricultural land is usually accompanied by accelerated soil salinization. There is general agreement that freezing-thawing process plays a crucial role in soil salinization in mostly cold-arid agricultural areas, which leads to the impoverishment of soil productivity. To investigate the migration characteristics of soil salinity in saline-sodic cotton field with different reclamation time in non-irrigation season, we examined the soil bulk, total porosity, and spatial and temporal migration of soil salinity in winter in an oasis agroecosystem of northern Xinjiang, China. Experimental plots include a saline alkali wasteland as control and cotton fields under four age categories (cultivation start years were 1998, 2006, 2008, and 2012, respectively). The results showed that converting saline-alkali wasteland to cotton land significantly decreased soil bulk density but increased total soil porosity, especially at 0-40 cm. Conversion significantly decreased soil salinity at 0-200 cm soil depths, with a greater decrease in cotton land after relatively longer time of cultivation. After freezing-thawing process, soil bulk density decreased 4.87% on average, and total porosity increased 5.98%. Soil salt dynamics showed that there were two stages in salt accumulation. Firstly, soil salt storage increased at 0-100 cm depth but decreased at 100-200 cm depth during freezing period; Secondly, rapid increase of salt storage appeared at late thawing period. In addition, salt accumulation positively correlated to initial salt content and bulk density, but negatively correlated to total porosity. At springtime, cotton land with short-term cultivation was desalination comparing with pre-freezing, but salt accumulation occurred after long-term cultivation. These results highlighted that long-term cultivation with mulched drip irrigation decreased soil salinity in the 0-200 cm soil profiles, but freezing-thawing process induced soil salinization which poses a potential risk to agricultural sustainability.
英文关键词Mulched drip irrigation Soil salinity Freezing-thawing action Cotton Artificial oasis
类型Article
语种英语
收录类别SCI-E
WOS记录号WOS:000793048900004
WOS关键词DISSOLVED ORGANIC-MATTER ; DRIP IRRIGATION ; FREEZE-THAW ; LAND-USE ; PHYSICAL-PROPERTIES ; PADDY SOILS ; WATER ; POROSITY ; SALINIZATION ; TILLAGE
WOS类目Agronomy ; Water Resources
WOS研究方向Agriculture ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/391590
推荐引用方式
GB/T 7714
Zong, Rui,Han, Yue,Tan, Mingdong,et al. Migration characteristics of soil salinity in saline-sodic cotton field with different reclamation time in non-irrigation season[J],2022,263.
APA Zong, Rui,Han, Yue,Tan, Mingdong,Zou, Ruihan,&Wang, Zhenhua.(2022).Migration characteristics of soil salinity in saline-sodic cotton field with different reclamation time in non-irrigation season.AGRICULTURAL WATER MANAGEMENT,263.
MLA Zong, Rui,et al."Migration characteristics of soil salinity in saline-sodic cotton field with different reclamation time in non-irrigation season".AGRICULTURAL WATER MANAGEMENT 263(2022).
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