DocumentCode :
1701667
Title :
A model for soil water and nitrogen transport in water storage pit irrigation
Author :
Li, Jingling ; Sun, Xihuan ; Ma, Juanjuan ; Li, Jianwen
Author_Institution :
Coll. of Water Resource Sci. & Eng., Taiyuan Univ. of Technol., Taiyuan, China
Volume :
1
fYear :
2011
Firstpage :
676
Lastpage :
679
Abstract :
In order to improve the use efficiency of nitrogen fertilizer and decrease the loss of nitrogen fertilizer, a two-dimensional mathematical model on soil water movement and nitrogen transformation was set up by integrating the basic equation of soil water and nitrogen transport with characteristics of water and nitrogen transport in soil under water storage pit irrigation, and solved numerically by finite volume method. The model verification results showed that good agreement was obtained between simulated and measured values of soil water contents, ammonium concentrations and nitrate concentrations. It indicated that the mathematic model was correct and solving the model with finite volume method was feasible, the mathematical model can be satisfactorily used to describe the soil water and nitrogen transport properties under water storage pit irrigation.
Keywords :
fertilisers; finite volume methods; geochemistry; hydrological techniques; irrigation; numerical analysis; soil; water storage; 2D mathematical model; ammonium concentrations; finite volume method; nitrate concentrations; nitrogen fertilizer; nitrogen transformation; nitrogen transport properties; numerical simulation; soil water contents; soil water movement; water storage pit irrigation; Fertilizers; Irrigation; Mathematical model; Nitrogen; Pollution measurement; Soil; Water; N-transformations; numerical simulation; soil water movement; water storage pit irrigation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Water Resource and Environmental Protection (ISWREP), 2011 International Symposium on
Conference_Location :
Xi´an
Print_ISBN :
978-1-61284-339-1
Type :
conf
DOI :
10.1109/ISWREP.2011.5893098
Filename :
5893098
Link To Document :
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