| Issue |
E3S Web Conf.
Volume 560, 2024
The 10th International Conference on Energy Materials and Environment Engineering (ICEMEE 2024)
|
|
|---|---|---|
| Article Number | 02013 | |
| Number of page(s) | 5 | |
| Section | Water Resources Management and Ecological Environment Control | |
| DOI | https://doi.org/10.1051/e3sconf/202456002013 | |
| Published online | 05 August 2024 | |
An Analytical Study on the Measurement of Agricultural Net Irrigation Water Requirements
1 Zhejiang Institute of Hydraulics & Estuary (Zhejiang Institute of Marine Planning and Design) Hangzhou, Zhejiang, 310020, China
2 Shaoxing Water Resources and Hydropower Survey and Design Institute Co., Ltd. Zhejiang Shaoxing, 312000, China
The net irrigation water requirement (NIWR) in the irrigated area is the “terminal” of water-use efficiency and the basis for implementing quota management and water-saving incentives. Also, it is significant for farmland water management and water conservation in irrigated areas. In light of the average water consumption per mu and the crop area, which are two key indicators of the NIWR, this paper adopts the field selection measurement method and the statistical method based on the image patches achieved by China’s third national land survey to acquire the data of water consumptions and crop areas. In this case, four principles of field selection are proposed, including “basic requirements”, “moderate size”, “controllable water inflow”, and “measurement practicality”, in an attempt to increase the number of fields selected for analysis. In addition, based on the image patches, the “complete investigation” and the “typical investigation” are suggested for irrigated areas at different scales to determine the crop areas, which are proven practicable and available for evaluating the water-use efficiency of irrigated areas at different scales.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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