干旱区生态环境知识资源中心(Arid): Measuring and modeling two-dimensional irrigation infiltration under film-mulched furrows

Arid

DOI	10.3724/SP.J.1226.2016.00419
	Measuring and modeling two-dimensional irrigation infiltration under film-mulched furrows
	Zhang, YongYong; Wu, PuTe; Zhao, XiNing; Zhao, WenZhi
通讯作者	Zhang, YY
来源期刊	SCIENCES IN COLD AND ARID REGIONS
ISSN	1674-3822
出版年	2016
卷号	8 期号:5 页码:419-431
英文摘要	Furrow irrigation with film-mulched agricultural beds is being promoted in the arid region of northwest China because it improves water utilization. Two-dimensional infiltration patterns under film-mulched furrows can provide guidelines and criteria for irrigation design and operation. Our objective was to investigate soil water dynamics during ponding irrigation infiltration of mulched furrows in a cross-sectional ridge-furrow configuration, using laboratory experiments and mathematical simulations. Six experimental treatments, with two soil types (silt loam and sandy loam), were investigated to monitor the wetting patterns and soil water distribution in a cuboid soil chamber. Irrigation of mulched furrows clearly increased water lateral infiltration on ridge shoulders and ridges, due to enhancement of capillary driving force. Increases to both initial soil water content (SWC) and irrigation water level resulted in increased wetted soil volume. Empirical regression equations accurately estimated the wetted lateral distance (R-l) and downward distance (R-d) with elapsed time in a variably wetted soil medium. Optimization of model parameters followed by the Inverse approach resulted in satisfactory agreement between observed and predicted cumulative infiltration and SWC. On the basis of model calibration, HYDRUS-2D model can accurately simulate two-dimensional soil water dynamics under irrigation of mulched furrows. There were significant differences in wetting patterns between unmulched and mulched furrow irrigation using HYDRUS-2D simulation. The R-d under the mulched furrows was 32.14% less than the unmulched furrows. Therefore, film-mulched furrows are recommended in a furrow irrigation system.
英文关键词	soil water distribution wetting pattern film-mulched furrows furrow irrigation HYDRUS-2D model
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000391633800007
WOS关键词	SOIL-WATER ; UNCROPPED RIDGES ; HYDRAULIC CONDUCTIVITY ; NITROGEN DISTRIBUTION ; SOLUTE TRANSPORT ; SIMULATION ; DYNAMICS ; FLOW ; PATTERNS ; DEPTH
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/331742
作者单位	[Zhang, YongYong; Zhao, WenZhi] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Linze Inland River Basin Res Stn, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Gansu, Peoples R China; [Wu, PuTe; Zhao, XiNing] Northwest A&F Univ, Inst Water Saving Agr Arid Reg China, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Zhang, YongYong,Wu, PuTe,Zhao, XiNing,et al. Measuring and modeling two-dimensional irrigation infiltration under film-mulched furrows[J]. 西北农林科技大学,2016,8(5):419-431.
APA	Zhang, YongYong,Wu, PuTe,Zhao, XiNing,&Zhao, WenZhi.(2016).Measuring and modeling two-dimensional irrigation infiltration under film-mulched furrows.SCIENCES IN COLD AND ARID REGIONS,8(5),419-431.
MLA	Zhang, YongYong,et al."Measuring and modeling two-dimensional irrigation infiltration under film-mulched furrows".SCIENCES IN COLD AND ARID REGIONS 8.5(2016):419-431.