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[1]ZHANG Xiaodong,LIU Shaoxiong,SUN Yu,et al.Variation Characteristics of Soil Physicochemical Properties of Coastal Saline-alkali Lands with Different Improvement Years[J].Research of Soil and Water Conservation,2022,29(01):113-118.

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Variation Characteristics of Soil Physicochemical Properties of Coastal Saline-alkali Lands with Different Improvement Years

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 01 Page number: 113-118 Column: Public date: 2022-02-20

Title:: Variation Characteristics of Soil Physicochemical Properties of Coastal Saline-alkali Lands with Different Improvement Years

Author(s):: ZHANG Xiaodong^1,2,3, LIU Shaoxiong⁴, SUN Yu^2,3, HU Aishuang^2,3, LI Kaichao², CHEN Yaheng¹; (1.College of Resources and Environmental Science, Hebei Agricultural University, Baoding, Hebei 071001, China; 2.Institute of Coastal Agriculture, Hebei Academy of Agriculture and Forestry Sciences, Tangshan, Hebei 063200, China; 3.Saline and Alkali Land Greening Technology Innovation Center of Hebei Province, Tangshan, Hebei 063200,China; 4.College of Land and Resources, Hebei Agricultural University, Baoding, Hebei 071001, China)

Keywords:: saline soil reclamation; planting on the original soil; different years; physicochemical properties

CLC:: S156.4

DOI:: -

Abstract:: In order to investigate the sustainable years of the comprehensive improvement effects of coastal saline-alkali land, we took the saline-alkali land which was improved in a comprehensive improvement mode and could be planted directly on the original soil as the research object and studied the changes of soil physicohemical properties in different ameliorating years by using space instead of time based on the analysis of soil bulk density, total porosity, mechanical composition, salinity and organic matter, alkali-hydro nitrogen and available phosphorus, of which coastal saline-alkali had been improved in a comprehensive way. The results showed that the improvement effects of this model on soil gradually weakened with the increase of soil depth. With the increase of the recovery years, soil texture did not change significantly, soil bulk density in 0—20 cm soil layer decreased, total porosity increased, while soil bulk densities in 20—40 cm soil layer and 40—60 cm soil layer decreased first and then increased, and total porosities first increased and then decreased. The change trend of the chemical properties of the three soil layers was basically the same. With the increase of the recovery years, soil salinity first decreased and then increased, and the contents of organic matter, alkali-hydro nitrogen and available phosphorus first increased and then decreased. In general, the comprehensive improvement model for the original soil in the coastal saline-alkali land reached the optimal level after 5-year improvement. The physicochemical properties of the soil were basically better than those of the unimproved saline-alkali land in the eleventh year.

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Last Update: 2022-02-20