确定在密西西比冲积平原建立的尾水回收系统的水预算

IF 1.5 Q3 AGRONOMY
Amanda M. Nelson, Paul Rodrigue, Matthew T. Moore, Christopher D. Delhom
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引用次数: 0

摘要

在密西西比河冲积平原,也被称为三角洲,尾水回收(TWR)农场储存(OFS)系统是解决水质和水量问题的最佳管理实践。TWR/OFS是地表水捕获和灌溉再利用系统,包括一个沟渠来捕获地表水,通常是一个水库来储存捕获的水,以及将地表水从沟渠转移到OFS水库或灌溉附近的田地的泵。为了确定已建立的TWR系统是否是减少地下水使用的有效方法,MS向日葵县的一个沟渠式TWR系统配备了流速和流量仪表,水位记录仪和雨量计。本研究的目的是确定一个老TWR系统的充分测量水预算。该研究发现,在两个生长季节中,22%的灌溉用水来自收集的尾水径流。在2023年生长季,系统通过流出管损失的输入水量仅为15.5%,表明生长季84.5%的输入水量(降水加灌溉)被保留在土壤中,用于植物生长,或在TWR中再循环。经过10年的使用,研究的TWR系统达到了减少抽取地下水和延长停留时间的双重目的,具有良好的水质和水文效益。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Determining a water budget for an established tailwater recovery system in the Mississippi Alluvial Plain

Determining a water budget for an established tailwater recovery system in the Mississippi Alluvial Plain

Determining a water budget for an established tailwater recovery system in the Mississippi Alluvial Plain

Determining a water budget for an established tailwater recovery system in the Mississippi Alluvial Plain

In the Mississippi Alluvial Plain, also known as the Delta, tailwater recovery (TWR) on-farm storage (OFS) systems are a best management practice to address both water quality and quantity issues. TWR/OFSs are surface water capture and irrigation reuse systems, consisting of a ditch to capture surface water and often a reservoir to store captured water and pumps to move surface water from the ditch into either an OFS reservoir or to irrigate nearby fields. To determine if established TWR systems are an effective way to reduce groundwater use, a ditch-only TWR system in Sunflower County, MS was equipped with velocity and flow meters, water level loggers, and rain gauges. The objective of this study was to determine a fully measured water budget for an older TWR system. This study found 22% of the total applied irrigated water over two growing seasons was from the collected tailwater runoff. During the 2023 growing season, only 15.5% of the input water was lost from the system through the outflow pipe, indicating that 84.5% of the input water (precipitation plus irrigation) during the growing season was retained in the soil, utilized for plant growth, or was recirculated in the TWR. After a decade of use, the studied TWR system is meeting its dual purpose of reducing groundwater pumping and enhancing residence times, which could have water quality and hydrologic benefits.

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来源期刊
Agrosystems, Geosciences & Environment
Agrosystems, Geosciences & Environment Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)
CiteScore
2.60
自引率
0.00%
发文量
80
审稿时长
24 weeks
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