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[1]MA Fuliang,FU Suhua,LUO Guanghui.Properties of Soil Water Retention and Hydraulic Conductivity in the Waterlogged Land over Slope Cropland in Typical Black Soil Region of Northeast China[J].Research of Soil and Water Conservation,2017,24(06):222-226.

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Properties of Soil Water Retention and Hydraulic Conductivity in the Waterlogged Land over Slope Cropland in Typical Black Soil Region of Northeast China

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 06 Page number: 222-226 Column: Public date: 2017-11-24

Title:: Properties of Soil Water Retention and Hydraulic Conductivity in the Waterlogged Land over Slope Cropland in Typical Black Soil Region of Northeast China

Author(s):: MA Fuliang¹, FU Suhua^1,2, LUO Guanghui³; 1. School of Geography, Beijing Normal University, Beijing 100875, China;
2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China;
3. Beijing No. 165 High School, Beijing 100010, China

Keywords:: black soil; slope cropland; waterlogged land; water retention characteristics

CLC:: S152.7⁺1;S152.3⁺3

DOI:: -

Abstract:: The typical black soil zone in northeast China is an important commodity grain production base in China and plays crucial roles in the national food security and economic stability. As a special form of soil degradation, waterlogged lands severely affect the agricultural production in reclamation regions. The objective of this study was to analyze the soil water retention characteristics and hydraulic conductivity of waterlogged land and try to find the cause of waterlogged land. The sampling points were set in and around the waterlogged land over the slope cropland in typical black soil region of northeast China. The soil texture distribution along the soil profiles and soil water retention characteristics were measured. The results showed that the fine soil texture accounted for 90% in the soil profile in waterlogged land. It resulted in a very adhesive soil texture. The waterlogged soil had higher air intake value and the larger water suction than the non-waterlogged soil. Therefore, the water in waterlogged soil pore could be released under the much larger water suction. In addition, the waterlogged soil has the strong water holding capacity and the weak soil hydraulic conductivity, which indicated that the water in the saturated soil can not be released and that the soil keeps high soil moisture. The above soil properties are the important reasons that the waterlogged soil remains a wet condition for a long time. These results could provide the technique supports for the control for waterlogged lands.

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