Experimental study on calculation model of labyrinth emitter discharge under subsurface drip irrigation

Authors

  • Hou Wen Institute of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi 'an 710048, China
  • Bai Dan Institute of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi 'an 710048, China
  • Zhou Wen College of Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450011, China

DOI:

https://doi.org/10.25165/ijabe.v7i6.1049

Keywords:

subsurface drip irrigation, emitter, soil clay content, discharge, calculation model

Abstract

Abstract: For different texture of soils, the grain composition is different with significant changes. Since the emitter of subsurface drip irrigation (SDI) is buried in the soil, emitter discharge is influenced by soil properties. An experiment was conducted to investigate the relationship between the soil properties with emitter working pressure and emitter discharge of SDI. Selecting three different grain composition soils, and emitter working pressure, as well as soil clay content, soil bulk density and initial soil moisture content respectively as influence factors of emitter discharge of SDI, the experimental scheme was gained by uniform design. A calculation model for determination of the SDI emitter discharge was established by regression analysis with the first two kinds of soil test data, and its reliability was verified by the third kind of soil test data. The model is simple with high accuracy, easy to use, and lays the foundation to study hydraulic elements of SDI field network, especially taking the soil clay content as an influencing factor has widened the scope of application of the model. The achievement is of great significance for design and management of SDI. Keywords: subsurface drip irrigation, emitter, soil clay content, discharge, calculation model DOI: 10.3965/j.ijabe.20140706.003 Citation: Hou W, Bai D, Zhou W. Experimental study on calculation model of labyrinth emitter discharge under subsurface drip irrigation. Int J Agric & Biol Eng, 2014; 7(6): 14－19.

Author Biographies

Hou Wen, Institute of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi 'an 710048, China

MS

Bai Dan, Institute of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi 'an 710048, China

PhD, Professor. esearch interest: water saving irrigation theory and technique. Mailing address: Institute of Water Resources and Hydroelectric Engineering, Xi’an University of Technology, Xi’an, Shaanxi Province, 710048, China. Tel: +86-13186112060.

Zhou Wen, College of Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450011, China

PhD

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Published

2014-12-30

How to Cite

Wen, H., Dan, B., & Wen, Z. (2014). Experimental study on calculation model of labyrinth emitter discharge under subsurface drip irrigation. International Journal of Agricultural and Biological Engineering, 7(6), 14–19. https://doi.org/10.25165/ijabe.v7i6.1049

Issue

Vol. 7 No. 6 (2014): IJABE

Section

Natural Resources and Environmental Systems

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