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保水剂对土壤持水性状的影响
引用本文:谢伯承,薛绪掌,王纪华,王国栋,高志远.保水剂对土壤持水性状的影响[J].水土保持通报,2003,23(6):44-46.
作者姓名:谢伯承  薛绪掌  王纪华  王国栋  高志远
作者单位:1. 国家农业信息化工程技术研究中心,北京,100089;西北农林科技大学,资源与环境学院,陕西,杨凌,712100
2. 国家农业信息化工程技术研究中心,北京,100089
3. 西北农林科技大学,资源与环境学院,陕西,杨凌,712100
基金项目:北京市科技新星计划(H020821340130)
摘    要:测定了保水剂对土壤持水性状的影响。保水剂拌入土壤后,其吸水能力明显降低,表现为理论含水量明显低于实测含水量。加入保水剂后,壤土水分的蒸发率比不加保水剂时壤土中水分的蒸发率高,沙土水分的蒸发率比不加保水剂时低。加入保水剂还明显减缓了水分向土壤深层的入渗,使水分滞留于土体近表层,使用不当会加大土壤无效蒸发的潜力。

关 键 词:保水剂  蒸发率  土壤
文章编号:1000-288X(2003)06-0044-03
收稿时间:2003/5/20 0:00:00
修稿时间:2003年5月20日

Influence of Water Absorbing Resin on Soil Moisture Retention Properties
XIE Bo-cheng,XUE Xu-zhang,WANG Ji-hu,WANG Guo-dong and GAO Zhi-yuan.Influence of Water Absorbing Resin on Soil Moisture Retention Properties[J].Bulletin of Soil and Water Conservation,2003,23(6):44-46.
Authors:XIE Bo-cheng  XUE Xu-zhang  WANG Ji-hu  WANG Guo-dong and GAO Zhi-yuan
Institution:XIE Bo-cheng~
Abstract:The influence of water absorbing resin on moisture retention properties of soils is studied. After added into soil, the moisture absorbing ability of resin decreased abruptly, resulting in less soil water content increment than expected. The evaporation rate of water in loamy soil increased as resin proportion in soil increased. The evaporation rate of water in sandy soil decreased as resin proportion increased. Adding of water absorbent restricted water infiltration into deep layer and could lead to more evaporation in early stages if applied improperly.
Keywords:water absorbent  evaporation rate  soil
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