引用本文:肖振华,万洪富.灌溉水质对土壤水力性质和物理性质的影响[J].土壤学报,1998,35(3):359-366. DOI:10.11766/trxb199703240310
Xiao Zhen-hua,Wan Hong-fu.EFFECT OF IRRIGATION WATER QUALITY ON SOIL HYDRAULIC AND PHYSICAL PROPERTIES[J].Acta Pedologica Sinica,1998,35(3):359-366. DOI:10.11766/trxb199703240310
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1705次   下载 2183 本文二维码信息
码上扫一扫!
分享到: 微信 更多
灌溉水质对土壤水力性质和物理性质的影响
肖振华1, 万洪富2
1.中国科学院南京土壤研究所, 南京 210008;2.广东省土壤研究所, 广州 560650
摘要:
本文研究了灌溉水质对田间原状土壤非饱和导水率的影响及其机理。研究结果表明,灌溉水质对土壤导水率有显著影响,随灌溉水矿化度增加,土壤导水率变大,而灌溉水钠吸附比(SAR)则有相反的作用,SAR愈高,土壤导水率愈低。本文还研究了灌溉水非常低的矿化度对土壤导水率产生的不可逆效应以及表土和底土导水率的差异,同时还研究了灌溉水质对土壤物理性质的影响。
关键词:  灌溉水质  土壤导水率  物理性质
基金项目:* 国家自然科学基金资助(批准号:49271044)
EFFECT OF IRRIGATION WATER QUALITY ON SOIL HYDRAULIC AND PHYSICAL PROPERTIES
Xiao Zhen-hua1, Wan Hong-fu2
1.Institute of Soil Science, Academia Sinica, Nanjing 210008;2.Institute of Soil Science Guangdong Province, Guangzhou 560650
Abstract:
The effect of irrigation water quality on unsaturated hydraulic conductivity (k) of undisturbed soil and its mechanism were studied. Results showed that the higher the mineralization degree of irrigation water, the higher the soil hydraulic conductivity became. High sodium-adsorption ratio (SAR) of irrigation water would have an unfavorable effect on soil hydraulic conductivity. The irrigation water with a very low mineralization degree had an irreversible effect on soil hydraulic conductivity, inducing a significant decrease of soil hydraulic conductivity. The effect of irrigation water quality on physical properties of the experimental soil was also studied.
Key words:  Irrigation water quality  Hydraulic conductivity  Physical properties