Numerical Simulations of Soil Water Dynamics under Surface Drip Irrigation Using HYDRUS-2D

M. Yu, Z. Hu, B. Liu, K. Zhang

Abstract

Irrigated agriculture plays a crucially important role in food production worldwide. Micro-irrigation has proved an effective approach to optimise and potentially save water use in agriculture. In this study, numerical simulations using HYDRUS-2D were performed to investigate soil water dynamics after surface drip irrigation on a clay loam soil. Two emitter radii of 5 cm and 10 cm for drip irrigation were assumed. The initial soil water content was set at the point that trigged irrigation, and the soil at the water discharge surface remained saturated during irrigation. Results showed that the irrigated amount of water for the emitter radius of 10 cm was 1.07, 1.97 and 2.86 L for the irrigation durations of 1, 2 and 3 h, respectively, about 1.55, 1.66 and 1.48 times higher than those for the emitter radius of 5 cm. Correspondingly, the soil wetting depth for the emitter radius of 10 cm was 13.5, 18.4 and 21.0 cm, respectively, about 20.1%, 35.8% and 22.5% higher than those for the emitter radius of 5 cm.

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Paper Citation


in Harvard Style

Yu M., Hu Z., Liu B. and Zhang K. (2018). Numerical Simulations of Soil Water Dynamics under Surface Drip Irrigation Using HYDRUS-2D.In Proceedings of the International Workshop on Environmental Management, Science and Engineering - Volume 1: IWEMSE, ISBN 978-989-758-344-5, pages 260-265. DOI: 10.5220/0007559602600265


in Bibtex Style

@conference{iwemse18,
author={M. Yu and Z. Hu and B. Liu and K. Zhang},
title={Numerical Simulations of Soil Water Dynamics under Surface Drip Irrigation Using HYDRUS-2D},
booktitle={Proceedings of the International Workshop on Environmental Management, Science and Engineering - Volume 1: IWEMSE,},
year={2018},
pages={260-265},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007559602600265},
isbn={978-989-758-344-5},
}


in EndNote Style

TY - CONF

JO - Proceedings of the International Workshop on Environmental Management, Science and Engineering - Volume 1: IWEMSE,
TI - Numerical Simulations of Soil Water Dynamics under Surface Drip Irrigation Using HYDRUS-2D
SN - 978-989-758-344-5
AU - Yu M.
AU - Hu Z.
AU - Liu B.
AU - Zhang K.
PY - 2018
SP - 260
EP - 265
DO - 10.5220/0007559602600265