Simulation of soil wetting pattern of vertical moistube-irrigation

doi:10.3390/w10050601

	Simulation of soil wetting pattern of vertical moistube-irrigation
	Fan, Yan-Wei1,2 ; Huang, Ning 1; Zhang, Jie1 ; Zhao, Tong 2
	2018-05-04
发表期刊	Water (Switzerland)
ISSN	2073-4441
卷号	10 期号:5
摘要	Knowledge of the soil wetting pattern characteristics of vertical moistube-irrigation is essential for the design of cost-effective and efficient irrigation systems. We conducted laboratory experiments to determine the specific discharge calculation formula and compare the accuracy of HYDRUS-2D simulation. The cumulative infiltrations, wetting pattern distances, and water content distributions predicted with HYDRUS-2D were found to align well with experimental data. The results provide support for using HYDRUS-2D as a tool for investigating and designing moistube-irrigation management practices. Numerical simulations were carried out with HYDRUS-2D to investigate the influence of soil texture, initial water content, pressure head, moistube length, and buried depth on wetting pattern characteristics. There are small differences in the shape of the soil wetting pattern, as well as significant differences in size. The wetting pattern and water content contour are approximately "ellipsoid" around the moistube. Soil texture has a significant effect on the wetting pattern characteristics, the vertical and horizontal wetting front distance, and the wetted soil volume decrease along with the increase of soil clay content. The initial water content, pressure head, and moistube length have great influence on the wetting front distance and the wetted soil volume. Both are positively correlated with the initial water content, pressure head, and length. Moistube buried depth affects the wetting pattern position. The soil wetting pattern decreases synchronously as the buried depth drops. © 2018 by the authors.
关键词	Cost effectiveness Irrigation Soils Textures Cumulative infiltrations Discharge calculation HYDRUS-2D Influencing factors Initial water contents Irrigation management Laboratory experiments Soil wetting pattern
DOI	10.3390/w10050601
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
WOS类目	Environmental Sciences ; Water Resources
WOS记录号	WOS:000435196700067
出版者	MDPI AG, Postfach, Basel, CH-4005, Switzerland
EI入藏号	20182005190064
EI主题词	Wetting
EI分类号	483.1 Soils and Soil Mechanics - 821.3 Agricultural Methods - 911.2 Industrial Economics
来源库	Compendex
分类代码	483.1 Soils and Soil Mechanics - 821.3 Agricultural Methods - 911.2 Industrial Economics
引用统计	被引频次：19[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/114741
专题	能源与动力工程学院机电工程学院
通讯作者	Huang, Ning
作者单位	1.Lanzhou Univ, Coll Civil Engn & Mech, Key Lab Mech Disaster & Environm Western China, Minist Educ China, Lanzhou 730000, Gansu, Peoples R China; 2.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	土木工程学院; 能源与动力工程学院
通讯作者单位	土木工程学院
第一作者的第一单位	土木工程学院
推荐引用方式 GB/T 7714	Fan, Yan-Wei,Huang, Ning,Zhang, Jie,et al. Simulation of soil wetting pattern of vertical moistube-irrigation[J]. Water (Switzerland),2018,10(5).
APA	Fan, Yan-Wei,Huang, Ning,Zhang, Jie,&Zhao, Tong.(2018).Simulation of soil wetting pattern of vertical moistube-irrigation.Water (Switzerland),10(5).
MLA	Fan, Yan-Wei,et al."Simulation of soil wetting pattern of vertical moistube-irrigation".Water (Switzerland) 10.5(2018).