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保水剂对土壤温度和水分动态的影响
引用本文:陈宝玉,王洪君,滕轶,孙海芹,杨建,黄选瑞.保水剂对土壤温度和水分动态的影响[J].中国水土保持科学,2008,6(6):32-36.
作者姓名:陈宝玉  王洪君  滕轶  孙海芹  杨建  黄选瑞
作者单位:1. 中国农业科技东北创新中心农业环境与资源研究中心,130124,长春
2. 国家林业局调查规划设计院,100714,北京
3. 承德市滦平县靳家沟林场,068257,河北滦平
4. 河北农业大学,071000,河北保定
基金项目:国家自然科学基金 , 河北省林业局科研项目 , 科技部科技支撑计划  
摘    要:为了研究保水剂对土壤温度和水分动态变化的影响,在河北农业大学实验基地,对青海“绿宝”公司提供的3种剂型保水剂施入土壤后的混剂土进行土壤温度和水分运动规律的测定。结果表明:土壤中加入保水剂后能够调节土壤温度的变化,提高土壤的保温性能,使土壤的昼夜温差减小;对土壤水分的蒸发有明显的抑制效应,混剂土中的水分会向四周的干燥土壤扩散,其扩散距离是对照的2倍,而含水率仍在16%~19%之间,土壤中加入保水剂后,混剂土所保持的水分86.7%~88.4%为有效水(0~1.5MPa)。随保水剂用量的增加,混剂土的保温效果、抑制水分蒸发效果越好,土壤水分扩散相同的距离,混剂土的含水量越高,从而为植物提供充足的水分,有利于植物的生长发育。

关 键 词:保水剂  土壤温度  土壤水分  土壤水势  混剂土

Effect of super absorbent polymers on soil temperature and water movement dynamics
Chen Baoyu,Wang Hongjun,Teng Yiyan,Sun Haiqin,Yang Jian,Huang Xuanrui.Effect of super absorbent polymers on soil temperature and water movement dynamics[J].Science of Soil and Water Conservation,2008,6(6):32-36.
Authors:Chen Baoyu  Wang Hongjun  Teng Yiyan  Sun Haiqin  Yang Jian  Huang Xuanrui
Institution:Chen Baoyu1,Wang Hongjun1,Teng Yiyan2,Sun Haiqin3,Yang Jian1,Huang Xuanrui4 (1.Agricultural Environment , Resource Research Centre,Northeast Agricultural Research Centre of China,130124,Changchun,2.Academy of Forestry Inventory , Planning,State Forestry Administration,100714,Beijing,3.Forestry Centre of Jinjiagou,Luanping County,068257,Luanping,Hebei,4.Agricultural University of Hebei,071000,Baoding,Hebei: China)
Abstract:In order to find out the effect of super absorbent polymers(SAP) on the dynamics variation of soil temperature and water movement after SAP was used in soil,soil temperature and water movement of SAP-mixed soil were measured at experimental base,Agricultural University of Hebei.The three kinds of SAP were offered by Lvbao Company,Xining,Qinghai Province.Results show that SAP can regulate the variation of soil temperature and improve the capability of heat preservation of soil,so that the difference in tempe...
Keywords:super absorbent polymers(SAP)  soil temperature  soil water content  soil water potential  SAP-mixed soil  
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