[1]马富亮,符素华,罗广惠.东北典型黑土区坡耕地涝渍地土壤持水性和导水性研究[J].水土保持研究,2017,24(06):222-226.
　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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东北典型黑土区坡耕地涝渍地土壤持水性和导水性研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 24 期数: 2017年06期 页码: 222-226 栏目: 出版日期: 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
作者:
马富亮1, 符素华1,2, 罗广惠3
1. 北京师范大学 地理学与遥感科学学院, 北京 100875;
2. 中国科学院 水利部 水土保持研究所 黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西 杨凌 712100;
3. 北京市一六五中学, 北京 100010
Author(s):
MA Fuliang1, FU Suhua1,2, 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
关键词:
黑土; 坡耕地; 涝渍地; 土壤水分特征曲线
Keywords:
black soil; slope cropland; waterlogged land; water retention characteristics
分类号:
S152.7+1;S152.3+3
摘要:
中国东北典型黑土区是我国重要的商品粮生产基地，对我国粮食安全和国民经济的稳定起到举足轻重的作用。作为土壤退化的一种特殊形式，涝渍地严重影响着垦区的农业生产。在东北典型黑土区坡面涝渍地及其周围正常耕地中布设采样点，测定了土壤剖面质地分布情况及土壤水分特征曲线，以揭示东北黑土区坡面涝渍地土壤水分过大的根本原因。结果表明，涝渍地土壤剖面中细质地土壤类型所占比例为90%，质地较粘重。涝渍地土壤具有较高的进气值，水吸力较大，保持在中小孔隙中的水分只有在较大吸力范围内才能缓慢释出，这造成涝渍地土壤具有极强的持水能力，不容易失水，再加上极弱的导水能力，水分饱和但不会被释放。以上这些土壤特性导致了涝渍地土壤长期处于湿度过大的状态。本研究结果可为涝渍地治理提供依据。
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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备注/Memo

收稿日期:2016-10-18;改回日期:2016-11-08。
基金项目:国家自然科学基金（41571259）；国家自然科学基金重点项目（41530858）；中国科学院“西部之光”人才培养引进计划的资助
作者简介:马富亮(1985-),男,山东夏津人,博士研究生,主要从事土壤水分运动方面的研究。E-mail:flma0620@163.com
通讯作者:符素华(1973-),女,四川岳池人,教授,主要从事土壤侵蚀与水土资源管理方面的研究。E-mail:suhua@bnu.edu.cn

更新日期/Last Update: 1900-01-01