干旱区研究

干旱区研究 ›› 2012, Vol. 29 ›› Issue (4): 609-614.

• 水土资源 • 上一篇    下一篇

不同粒径保水剂吸水特性及其对土壤物理性能的影响

李兴1，2，3, 蒋进1, 宋春武1, 陈明4, 张运超1，2, 张恒1，2   

    1. 中国科学院新疆生态与地理研究所，新疆 乌鲁木齐　830011；
    2. 中国科学院研究生院，北京　100049；
    3. 常德市水利水电勘测设计院，湖南 常德　415000； 
    4. 新疆额尔齐斯河流域工程开发建设管理局，新疆 乌鲁木齐　830011
  • 收稿日期:2011-07-14 修回日期:2011-08-23 出版日期:2012-07-15 发布日期:2012-09-11
  • 通讯作者: 蒋进.Email：jiangjin@ms.xjb.ac.cn
  • 作者简介:李兴（1984-），男，陕西榆林人，硕士生，主要从事沙漠化防治研究.Email：rlgx@163.com
  • 基金资助:

    新疆维吾尔自治区高技术研究发展项目（201133129）

Water Absorbent Capacity of Super Absorbent Polymer with Different Granularities and Its Effect on Soil Physical Properties

 LI  Xing1，2，3, JIANG  Jin1, SONG  Chun-Wu1, CHEN  Ming4, ZHANG  Yun-Chao1，2, ZHANG  Heng1，2   

  1. 1.  Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
    2. Graduate University, Chinese Academy of Sciences, Beijing 100049, China;
    3.  Changde Water Conservancy and Hydropower Design Institute, Changde 415000, Hunan Province, China;
    4.  Ertix River Basin Management Bureau of Engineering Development and Construction, Urumqi 830011,China
  • Received:2011-07-14 Revised:2011-08-23 Online:2012-07-15 Published:2012-09-11

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被引次数

19

摘要： 通过室内试验，对大粒径（2.0~3.2 mm）、中粒径（1.0~2.0 mm）和小粒径（0.5~1 mm）3种粒径保水剂的吸水特性进行了测定，同时对施加不同粒径保水剂前后的沙质土壤的理化性质进行对比分析。结果表明：① 保水剂的吸水倍率与其粒径大小呈负相关关系；② 保水剂对土壤水分蒸发有明显的抑制效应，能显著提高土壤的水分含量；③ 保水剂会使土壤pH和电导率升高，降低土壤渗透性，土壤中液相比例增加的同时气相比例会相应减少。综合考虑3种不同粒径保水剂对土壤理化性质的影响，中粒径保水剂改善效果最好，在施用量为0.1%时，对土壤的改良效果最为明显，亦不会产生明显副作用。  

关键词: 保水剂, 粒径, 渗透性, 土壤含水量, 电导率, 沙质土壤

Abstract: In this paper, the effects of super absorbent polymer (SAP) on soil physical and chemical properties and the relationships among water absorbent capacity of SAP with three different granularities (2.0-3.2 mm, 1.0-2.0 mm and 0.5-1.0 mm) were studied in laboratory. The results showed that there was a negative correlation between water absorbent rate and SAP granularity. Soil moisture content could be significantly increased and soil evaporationcould be restricted after applying SAP. Soil pH value and electrical conductivity could be increased after　applying SAP, the proportion of liquid phase in soil could be increased, but that of gas phase decreased, and soil permeability could also be decreased. In general, the improving effects of SAP with medium granularity on soil physical and chemical properties, such as soil water content, pH value, total porosity, permeability and electrical conductivity, were the highest, especially when the proportion of applied SAP was 0.1%.

Key words: super absorbent polymer (SAP), granularity, permeability, soil moisture content, electrical conductivity, sandy soil