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Advanced Technology in Agricultural Water-Saving Irrigation

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Water, Agriculture and Aquaculture".

Deadline for manuscript submissions: 25 January 2027 | Viewed by 514

Editors


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Guest Editor
College of Agricultural Science and Engineering, Hohai University, Nanjing 211100, China
Interests: water quality monitoring; brackish water irrigation; solute transport; smart irrigation; artificial intelligence; real-time monitoring; model optimization

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Guest Editor
Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050022, China
Interests: brackish water irrigation; water-saving technology; rainwater harvesting; crop quality regulating; model optimization; precision Irrigation

Special Issue Information

Dear Colleagues,

Against the backdrop of increasingly scarce global water resources, advanced water-saving irrigation technologies have become a core driver for sustainable agricultural development. This Special Issue focuses on this cutting-edge field, aiming to explore how technological innovations can achieve efficient and precise utilization of water resources.

Key areas of interest include real-time soil moisture monitoring systems based on IoT and smart sensors, irrigation decision-making models driven by big data and artificial intelligence, high-efficiency and uniform precision irrigation equipment (such as drip irrigation, micro-sprinkler, and subsurface irrigation), and intelligent management systems integrated with fertigation. These technologies not only significantly improve water use efficiency but also strive to minimize agricultural water consumption and non-point source pollution while ensuring crop yields.

This Special Issue invites scholars and engineers in related fields to share their latest achievements in theoretical breakthroughs, technological development, and practical applications. Together, we aim to advance water-saving irrigation technologies toward a smarter, more integrated, and sustainable future, providing key technological solutions to address global food security and water resource challenges.

Dr. Weihua Guo
Dr. Jintao Wang
Guest Editors

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • smart irrigation
  • water-saving technology
  • precision irrigation
  • AI-driven models
  • sustainable agriculture

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Published Papers (1 paper)

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Research

23 pages, 2731 KB  
Article
Experimental and Numerical Study of Flow over the Weir–Flume Combination Facility
by Fan Yang, Gang Ling, Jichao Yang, Hui Wang, Yuxiang Ba, Xingjiao Yu, Wene Wang and Xiaotao Hu
Water 2026, 18(14), 1747; https://doi.org/10.3390/w18141747 - 19 Jul 2026
Viewed by 181
Abstract
The weir–flume combination facility is a type of river flow-measurement structure consisting of a flow weir and a Crump weir, designed to integrate flow measurement and upstream backwater regulation, while incorporating a central flume intended to provide a potential passage for aquatic organisms. [...] Read more.
The weir–flume combination facility is a type of river flow-measurement structure consisting of a flow weir and a Crump weir, designed to integrate flow measurement and upstream backwater regulation, while incorporating a central flume intended to provide a potential passage for aquatic organisms. This study proposes a novel combined weir–flume structure and systematically validates its hydraulic performance through integrated physical experimentation and high-fidelity numerical simulation. Laboratory tests across a flow range of 5–79 L/s revealed longitudinal water surface profiles and Froude number (Fr) distributions. The study findings show that: (1) As the flow increases, the flow regime of the combination facility transitions from flume flow to weir flow, with the critical transition point at a relative water depth of 0.885. (2) The RNG k-ε turbulence model in Flow-3D software (v11.2, Flow Science, Inc., Santa Fe, NM, USA) effectively simulates the flow movement in the weir–flume combination facility, with water depth simulation results closely matching the measured values, and the maximum relative error not exceeding 5%. (3) The Fr and flow velocity in the weir–flume combination facility first increase and then decrease along the length, forming a large, thin water layer area downstream of the facility, where both Fr and flow velocity reach their maximum values. (4) Flow measurement formulas for flume flow and weir flow are obtained through data fitting, with relative errors between the calculated values and measured flow rates being less than 3%. The present study focuses on the hydraulic performance and flow measurement capability of the proposed facility. Although the structural configuration is intended to facilitate ecological passage, its ecological effectiveness was not evaluated and requires further investigation in future studies. Full article
(This article belongs to the Special Issue Advanced Technology in Agricultural Water-Saving Irrigation)
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