American Society of Civil Engineers


One-Dimensional Surface Flow and Solute Transport Model for Basin Irrigation in Traditional Surface Application of Fertilizer


by Shaohui Zhang, (corresponding author), (engineer, National Center of Efficient Irrigation Engineering and Technology Research, China Institute of Water Resources and Hydropower Research, 20 West Chegongzhuang Rd., 100048 Beijing, China. E-mail: zhangsh@iwhr.com), Di Xu, (Professor, National Center of Efficient Irrigation Engineering and Technology Research, China Institute of Water Resources and Hydropower Research, 20 West Chegongzhuang Rd., 100048 Beijing, China. E-mail: xudi@iwhr.com), Yinong Li, (Professor, National Center of Efficient Irrigation Engineering and Technology Research, China Institute of Water Resources and Hydropower Research, 20 West Chegongzhuang Rd., 100048 Beijing, China. E-mail: liyinong@iwhr.com), and Meijian Bai, (Senior Engineer, National Center of Efficient Irrigation Engineering and Technology Research, China Institute of Water Resources and Hydropower Research, 20 West Chegongzhuang Rd., 100048 Beijing, China. E-mail: baimj@iwhr.com)

Journal of Irrigation and Drainage Engineering, Vol. 138, No. 1, January 2012, pp. 104-110, (doi:  http://dx.doi.org/10.1061/(ASCE)IR.1943-4774.0000376)

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Document type: Technical Note
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.


ASCE Subject Headings:
Irrigation
Overland flow
Water flow
Fertilizers
Velocity
Simulation
Basins

Author Keywords:
Basin irrigation
Traditional surface fertilization
Fertilizer solute
Nonuniform distribution
Flow velocity field
Solute concentration field