HYDRUS-2D simulations of water movement in a drip irrigation system under soilless substrate
Keywords:
drip irrigation, HYDRUS-2D, substrate water movement, soilless substrateAbstract
A comprehensive understanding of the distribution and water movement of the substrate in root areas is crucial to the design and management of drip irrigation systems, which is a significant step to maximizing crop water use efficiency by understanding the hydrodynamics in soilless substrates. In this study, an improved HYDRUS-2D model by the dynamic root growth model was used to simulate water movement under the condition of drip irrigation and the water uptake process of the root, and then, compared with the observed data. Substrate water content under drip irrigation was also measured with the calibrated ECH20-EC5 sensors. The situation of substrate water movement was analyzed under the conditions of different depths, different initial water content, and different irrigation amount. The substrate water movement under different drip irrigation conditions was explored. The results showed that incorporating the defined initial and boundary conditions and the hydraulic characteristics of the substrate into the model enabled HYDRUS model to predict the movement and position of water in unsaturated porous media by solving Richards equation. Under drip irrigation, the substrate wetting body was approximately a quarter ellipse, and the water would continue to move to the area where the wetting front did not reach within 1 h after irrigation. The simulation results of the improved HYDRUS-2D model agreed well with those observed by the ECH2O-EC5 sensors, and the model could provide a basis for precision irrigation of soilless substrate culture under drip irrigation. Keywords: drip irrigation, HYDRUS-2D, substrate water movement, soilless substrate DOI: 10.25165/j.ijabe.20221503.6951 Citation: Geng L, Li L, Li W, Yang C F, Meng F J. HYDRUS-2D simulations of water movement in a drip irrigation system under soilless substrate. Int J Agric & Biol Eng, 2022; 15(3): 210–216.References
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[3] Wang J T, Du G F, Tian J S, Jiang C D, Zhang Y L, Zhang W F. Mulched drip irrigation increases cotton yield and water use efficiency via improving fine root plasticity. Agricultural Water Management, 2021; 255: 106992. doi: 10.1016/j.agwat.2021.106992.
[4] Li H R, Mei X R, Wang J D, Huang F, Hao W P, Li B G. Drip fertigation significantly increased crop yield, water productivity and nitrogen use efficiency with respect to traditional irrigation and fertilization practices: A meta-analysis in China. Agricultural Water Management, 2021; 244: 106534. doi: 10.1016/j.agwat.2020.106534.
[5] Lazarovitch N, Poulton M, Furman A, Warrick A W. Water distribution under trickle irrigation predicted using artificial neural networks. Journal of Engineering Mathematics, 2009; 64(2): 207–218.
[6] Hutton R J, Loveys B R. A partial root zone drying irrigation strategy for citrus-Effects on water use efficiency and fruit characteristics. Agricultural Water Management, 2011; 98(10): 1485–1496.
[7] Qiu R J, Du T S, Kang S Z. Root length density distribution and associated soil water dynamics for tomato plants under furrow irrigation in a solar greenhouse. Journal of Arid Land, 2017; 9(5): 637–650.
[8] Morillo J G, Díaz J A R, Camacho E, Montesinos P. Drip irrigation scheduling using Hydrus 2-D numerical model application for strawberry production in south-west Spain. Irrigation and Drainage, 2017; 66(5): 797–807.
[9] Zhao D, Wang Z H, Li W H, Zhang J Z, Lyu D S. Effects of alternate partial root-zone irrigation on root characteristic and yield of processing tomato under drip irrigation. Journal of Nuclear Agricultural Sciences, 2018; 32(10): 2067–2079. (in Chinese)
[10] Tao H L, Chen C, Jiang P, Tang L Y. Soil water characteristic curves based on particle analysis. Procedia Engineering, 2017; 174: 1289–1295.
[11] Santiago B, María D F, Francisco J C, María R G. Soil spatio-temporal distribution of water, salts and nutrients in greenhouse, drip-irrigated tomato crops using lysimetry and dielectric methods. Agricultural Water Management, 2018; 203: 151–161.
[12] Everton A R P, Quirijn D K V L, Jirka Š. The role of soil hydraulic properties in crop water use efficiency: A process-based analysis for some Brazilian scenarios. Agricultural Systems, 2019; 173: 364–377.
[13] Barrett G E, Alexander P D, Robinson J S, Bragg N C. Achieving environmentally sustainable growing media for soilless plant cultivation systems: A review. Scientia Horticulturae, 2016; 212: 220–234.
[14] Putra P A, Yuliando H. Soilless culture system to support water use efficiency and product quality: A review. Agriculture and Agricultural Science Procedia, 2015; 3: 283–288.
[15] Tanigawa T, Kunitake T, Nakamura C, Yamada A, Suyama T, Saeki K. Effects of culturing methods of mother plants on yield of cuttings and quality of rooted cuttings in summer-to-autumn-flowering Chrysanthemum morifolium Ramat. Horticultural Research, 2010; 9(1): 31–38.
[16] Zhang Y Y, Liu J N, Xu S G, Chen Z B, Yu L. Application practice of horticultural plant soilless culture. Advances in Social Science, Education and Humanities Research, 2017; 123: 36. doi: 10.2991/ icesame-17.2017.36.
[17] Demirsoy L, Msr D, Adak N. Strawberry production in soilless culture. Anadolu, 2017; 27(1): 71–80.
[18] Jalal S, Bakhtiar K, Nazir K, Mohammad H K, Sepideh K. Simulating wetting front dimensions of drip irrigation systems: Multi criteria assessment of soft computing models. Journal of Hydrology, 2020; 585: 124792. doi: 10.1016/j.jhydrol.2020.124792.
[19] Roche W J, Murphy K, Flynn D P. Modelling preferential flow through unsaturated porous media with the Preisach model and an extended Richards equation to capture hysteresis and relaxation behavior. Journal of Physics: Conference Series, 2021; 1730(1): 012002. doi: 10.1088/ 1742-6596/1730/1/012002.
[20] Li S, Xie Y, Xin Y, Liu G, Wang W T, Gao X F, et al. Validation and modification of the Van Genuchten model for eroded black soil in northeastern China. Water, 2020; 12(10): 2678. doi: 10.3390/w12102678.
[21] Ahmed A-T, Saqib H, Wang X S. A stabilizer free weak Galerkin finite element method for parabolic equation. Journal of Computational and Applied Mathematics, 2021; 392(6): 113373. doi: 10.1016/J.CAM.2020.113373.
[22] Hamed E, Abdolmajid L, Masoud P, Fariborz A. Comparison of one- and two-dimensional models to simulate alternate and conventional furrow fertigation. Journal of Irrigation and Drainage Engineering, 2012; 138(10): 929–938.
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Published
2022-06-30
How to Cite
Geng, L., Li, L., Li, W., Yang, C., & Meng, F. (2022). HYDRUS-2D simulations of water movement in a drip irrigation system under soilless substrate. International Journal of Agricultural and Biological Engineering, 15(3), 210–216. Retrieved from https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/6951
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Information Technology, Sensors and Control Systems
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