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| 一种测定土壤水分迁移率的方法研究 | |
| 引用本文： | M. P. C. ENGLER,R. CICHOTA,Q. DE JONG VAN LIER,E. M. BLOEM,G. SPAROVEK,E. SCHNUG. 一种测定土壤水分迁移率的方法研究[J]. 土壤圈, 2008, 18(3): 328-334. DOI: 10.1016/S1002-0160(08)60022-3 |
| 作者姓名： | M. P. C. ENGLER R. CICHOTA Q. DE JONG VAN LIER E. M. BLOEM G. SPAROVEK E. SCHNUG |
| 作者单位： | [1]Uniwrsity of Sao Paulo, C.P. 9, Piracicaba （SP） 13418-900 （Brazil）. [2]Institute of Natural Resources, Massey University, P.O. Box 11 222, Palmerston North （New Zealand） [3]Institute for Crop and Soil Science, （JKI） Federal Research Centre for Cultivated Plants, Bundesallee 50, D-38116Braunsehweig （Germany） |
| 基金项目： | project supported by Coordena(c)āo de Aperfei(c)oamento de Pessoal de Níel Superior (CAPNS) |
| 摘 要： | A new laboratory method was proposed to establish an easily performed standard for the determination of mobile soil water close to real conditions during the infiltration and redistribution of water in a soil. It consisted of applying a water volume with a tracer ion on top of an undisturbed ring sample on a pressure plate under a known suction or pressure head. Afterwards, soil water mobility was determined by analyzing the tracer-ion concentration in the soil sample. Soil water mobility showed to be a function of the applied water volume. No relation between soil water mobility and applied pressure head could be established with data from the present cxperiment. A simple one- or two-parameter equation can be fitted to the experimental data to parameterize soil water mobility as a function of applied solute volume. Sandy soils showed higher mobility than loamy＂ soils at low values of applied solute volumes, and both sandy and loamy soils showed an almost complete mobility at high applied solute volumes. |
| 关 键 词： | 土壤结构 实验室方法 循环水 压力 |
| 收稿时间： | 2007-07-25 |
| 修稿时间： | 14 March 2008. |
An alternative approach for the determination of soil water mobility |
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| M. P. C. ENGLER,R. CICHOTA,Q. DE JONG VAN LIER,E. M. BLOEM,G. SPAROVEK and E. SCHNUG. An alternative approach for the determination of soil water mobility[J]. Pedosphere, 2008, 18(3): 328-334. DOI: 10.1016/S1002-0160(08)60022-3 | |
| Authors: | M. P. C. ENGLER R. CICHOTA Q. DE JONG VAN LIER E. M. BLOEM G. SPAROVEK E. SCHNUG |
| Affiliation: | aUniversity of São Paulo, C.P. 9, Piracicaba (SP) 13418-900 (Brazil) bInstitute of Natural Resources, Massey University, P.O. Box 11 222, Palmerston North (New Zealand) cInstitute for Crop and Soil Science, (JKI) Federal Research Centre for Cultivated Plants, Bundesallee 50, D-38116 Braunschweig (Germany) |
| Abstract: | A new laboratory method was proposed to establish an easily performed standard for the determination of mobile soil water close to real conditions during the infiltration and redistribution of water in a soil.It consisted of applying a water volume with a tracer ion on top of an undisturbed ring sample on a pressure plate under a known suction or pressure head.Afterwards,soil water mobility was determined by analyzing the tracer-ion concentration in the soil sample.Soil water mobility showed to be a function of the applied water volume.No relation between soil water mobility and applied pressure head could be established with data from the present experiment.A simple one- or two-parameter equation can be fitted to the experimental data to parameterize soil water mobility as a function of applied solute volume.Sandy soils showed higher mobility than loamy soils at low values of applied solute volumes,and both sandy and loamy soils showed an almost complete mobility at high applied solute volumes. |
| Keywords: | laboratory method mobile-immobile water pressure head soil texture |
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