One-Dimensional Surface Flow and Solute Transport Model for Basin Irrigation in Traditional Surface Application of Fertilizer
Publication: Journal of Irrigation and Drainage Engineering
Volume 138, Issue 1
Abstract
A basis of contrast for advanced basin fertigation method can be provided by simulating the one-dimensional surface flow and solute transport process of basin irrigation in traditional surface application of fertilizer. A nonuniform distribution field of water flow velocity and solute concentration along the basin and its arbitrary cross section were constructed on the basis of vertical linear and logarithmic law in turbulence theory and continuous equation of incompressible hydrodynamics. A one-dimensional surface flow and solute transport model for basin irrigation in traditional surface application of fertilizer was proposed. At the same time, validation of the proposed model was carried out by using the results of typical basin irrigation tests. Results show that the proposed model can efficiently simulate the water flow and solute transport processes of basin irrigation, and exhibits good potential in conservation of water and solute quantity. Thus, the proposed model provides a research numerical tool for evaluating the performance of basin irrigation in traditional surface application of fertilizer, and serves as a basis for comparison of basin irrigation systems under different modes of fertilizer application.
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Acknowledgments
This research was supported by the Projects of the National High-tech R&D Program No. UNSPECIFIED2006AA100210 and UNSPECIFIED2006AA100221 and by the National Natural Science Foundation of China (No. UNSPECIFIED50909100). Thanks are due to Li Fuxiang and Dong Mengjun for contributing to the field experiments. The writers are very grateful to the editors and reviewers for their comments and remarks, which have resulted in significant improvements to this manuscript.
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© 2012 American Society of Civil Engineers.
History
Received: Oct 13, 2010
Accepted: Apr 28, 2011
Published online: Apr 30, 2011
Published in print: Jan 1, 2012
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