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

	Measuring and modeling two-dimensional irrigation infiltration under film-mulched furrows
	Zhang Yongyong; Wu Pute; Zhao Xining; Zhao Wenzhi
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(Rl)and downward distance(Rd)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 Rd 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	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5828446
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335711
作者单位	Zhang Yongyong, Linze Inland River Basin Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Eco-hydrology of Inland River Basin, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Zhao Wenzhi, Linze Inland River Basin Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Eco-hydrology of Inland River Basin, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Wu Pute, Institute of Water Saving Agriculture in Arid Regions of China, Northwest A & F University, Yangling, Shaanxi 712100, China.; Zhao Xining, Institute of Water Saving Agriculture in Arid Regions of China, Northwest A & F University, Yangling, Shaanxi 712100, 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],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.