华北农学报 ›› 2010, Vol. 25 ›› Issue (3): 205-208. doi: 10.7668/hbnxb.2010.03.043

所属专题: 盐碱胁迫

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重度苏打碱土饱和导水率特征分析

迟春明1, 王志春2   

  1. 1. 中国科学院, 东北地理与农业生态研究所, 吉林 长春 130012;
    2. 中国科学院, 研究生院, 北京 100049
  • 收稿日期:2009-12-21 出版日期:2010-06-28
  • 通讯作者: 王志春(1963-),男,吉林长春人,研究员,博士,主要从事盐渍土生态研究。
  • 作者简介:迟春明(1978-),男,吉林长春人,博士,主要从事盐渍土生态研究.
  • 基金资助:
    中科院西部行动计划项目(KZCX2-XB2-13);中科院东北地理与农业生态研究所前沿领域项目(KZCX3-SWNA3-41)

The Saturated Hydraulic Conductivity of Hard Sodic Soil in Songnen Plain

CHI Chun-ming1, 2   

  1. 1. Northeast Institute of Geography and Agroecology, Chinese Academy Sciences, Changchun 130012, China
    2. Graduate University of Chinese Academy Sciences, Beijing 100049, China
  • Received:2009-12-21 Published:2010-06-28

摘要: 选择3组典型苏打碱土剖面,对0~60 cm土层原状土和表层0~10 cm扰动土的饱和导水率进行了测定,分析了苏打碱土饱和导水率的基本特征。结果表明:苏打碱土饱和导水率极低,原状土仅为0.02~0.19 mm/d;在1.08~1.50 g/cm3容重范围内,表层扰动土饱和导水率变化区间为:0.05~0.80 mm/d。如此低的透水性能必然不利于土壤盐分的淋洗。但是,苏打碱土饱和浸提液电导率已超过盐土阈值(4 dS/m),因此,改良利用苏打碱土时必须进行盐分淋洗。所以,苏打碱土饱和导水率与盐分淋洗的相互关系需进一步深入研究。

关键词: 松嫩平原, 苏打碱土, 饱和导水率

Abstract: Saturated hydraulic conductivities( K10 ) of 3 sodic soil profiles were determined.The results showed that K10was very low with ranging from 0.02 mm/d to 0.19 mm/d for original soils and K10 of disturbed surface soils ranges from 0.05 mm/d to 0.80 mm/d with soil bulk density ranging of 1.08-1.50 g/cm3.The saturated hydraulic conductivity of sodic soil in Songnen Plain was so low that the leaching of soluble salts will be restricted by low profile permeability.And soil salinity of sodic soil in Songnen Plain was very high.Therefore, further study of relationships between salts leaching and saturated hydraulic conductivity of sodic soils in Songnen Plain is needed.

Key words: Songnen plain, Sodic soil, Saturated hydraulic conductivity

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引用本文

迟春明, 王志春. 重度苏打碱土饱和导水率特征分析[J]. 华北农学报, 2010, 25(3): 205-208. doi: 10.7668/hbnxb.2010.03.043.

CHI Chun-ming,, WANG Zhi-chun. The Saturated Hydraulic Conductivity of Hard Sodic Soil in Songnen Plain[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(3): 205-208. doi: 10.7668/hbnxb.2010.03.043.

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