Arid
DOI10.1016/j.agwat.2012.11.014
Deep subsurface drip irrigation using coal-bed sodic water: Part I. Water and solute movement
Bern, Carleton R.1; Breit, George N.1; Healy, Richard W.2; Zupancic, John W.3; Hammack, Richard4
通讯作者Bern, Carleton R.
来源期刊AGRICULTURAL WATER MANAGEMENT
ISSN0378-3774
出版年2013
卷号118页码:122-134
英文摘要

Water co-produced with coal-bed methane (CBM) in the semi-arid Powder River Basin of Wyoming and Montana commonly has relatively low salinity and high sodium adsorption ratios that can degrade soil permeability where used for irrigation. Nevertheless, a desire to derive beneficial use from the water and a need to dispose of large volumes of it have motivated the design of a deep subsurface drip irrigation (SDI) system capable of utilizing that water. Drip tubing is buried 92 cm deep and irrigates at a relatively constant rate year-round, while evapotranspiration by the alfalfa and grass crops grown is seasonal. We use field data from two sites and computer simulations of unsaturated flow to understand water and solute movements in the SDI fields. Combined irrigation and precipitation exceed potential evapotranspiration by 300-480 mm annually. Initially, excess water contributes to increased storage in the unsaturated zone, and then drainage causes cyclical rises in the water table beneath the fields. Native chloride and nitrate below 200 cm depth are leached by the drainage. Some CBM water moves upward from the drip tubing, drawn by drier conditions above. Chloride from CBM water accumulates there as root uptake removes the water. Year over year accumulations indicated by computer simulations illustrate that infiltration of precipitation water from the surface only partially leaches such accumulations away. Field data show that 7% and 27% of added chloride has accumulated above the drip tubing in an alfalfa and grass field, respectively, following 6 years of irrigation. Maximum chloride concentrations in the alfalfa field are around 45 cm depth but reach the surface in parts of the grass field, illustrating differences driven by crop physiology. Deep SDI offers a means of utilizing marginal quality irrigation waters and managing the accumulation of their associated solutes in the crop rooting zone. Published by Elsevier B.V.


英文关键词Chloride Drainage Excess irrigation Powder River Basin Wyoming VS2DT
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000315324400014
WOS关键词DESERT SOILS ; SALINE ; MANAGEMENT
WOS类目Agronomy ; Water Resources
WOS研究方向Agriculture ; Water Resources
来源机构United States Geological Survey
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/175573
作者单位1.US Geol Survey, Crustal Geophys & Geochem Sci Ctr, Denver Fed Ctr, Denver, CO 80225 USA;
2.US Geol Survey, Natl Res Program, Denver, CO 80225 USA;
3.BeneTerra LLC, Sheridan, WY 82801 USA;
4.Natl Energy Technol Lab, Pittsburgh, PA 15236 USA
推荐引用方式
GB/T 7714
Bern, Carleton R.,Breit, George N.,Healy, Richard W.,et al. Deep subsurface drip irrigation using coal-bed sodic water: Part I. Water and solute movement[J]. United States Geological Survey,2013,118:122-134.
APA Bern, Carleton R.,Breit, George N.,Healy, Richard W.,Zupancic, John W.,&Hammack, Richard.(2013).Deep subsurface drip irrigation using coal-bed sodic water: Part I. Water and solute movement.AGRICULTURAL WATER MANAGEMENT,118,122-134.
MLA Bern, Carleton R.,et al."Deep subsurface drip irrigation using coal-bed sodic water: Part I. Water and solute movement".AGRICULTURAL WATER MANAGEMENT 118(2013):122-134.
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