An empirical model for estimating soil wetting pattern dimensions during film hole irrigation

doi:10.1080/03650340.2019.1694147

	An empirical model for estimating soil wetting pattern dimensions during film hole irrigation
	Fan, Yanwei 1; Shao, Xiaoxia 1; Gong, Jiaguo 2; Wang, Ying 2
刊名	ARCHIVES OF AGRONOMY AND SOIL SCIENCE
	2020-11-09
卷号	66 期号:13 页码:1765-1779
关键词	Film hole irrigation wetted radius wetted depth empirical model
ISSN号	0365-0340
DOI	10.1080/03650340.2019.1694147
英文摘要	Studying the dimensions of soil wetting pattern (SWP) is important for designing optimal film hole irrigation (FHI) systems. HYDRUS-2D was used to simulate the dynamic changes of SWP under different soil texture (ST), initial moisture content (theta(i)), film hole diameter (D) and irrigation water head (H) during FHI. The results indicate that ST and D, rather than H and theta(i), have a significant impact on SWP. Based on the simulation results, a power function was utilized to fit the horizontal radius (X) and vertical depth (Y) of SWP. The relationship between the fitting parameters and D, H, and saturated hydraulic conductivity (K-s) was analysed. An empirical model for estimating the X and Y was produced. Data from laboratory experiments and published studies were adopted to assess the empirical model. The results showed that the X and Y calculated using the empirical model were highly consistent with the observed data. The values of root-mean-square error vary from 0.355 to 1.107 cm and Nash Sutcliffe efficiency is closed to 1.0. In this study, the only parameter required for the empirical model is K-s, which can provide valuable and practical tools for FHI design.
WOS研究方向	Agriculture
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000497869300001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/155306]
专题	能源与动力工程学院
作者单位	1.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou, Gansu, Peoples R China; 2.China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycles Rive, Beijing 100038, Peoples R China
推荐引用方式 GB/T 7714	Fan, Yanwei,Shao, Xiaoxia,Gong, Jiaguo,et al. An empirical model for estimating soil wetting pattern dimensions during film hole irrigation[J]. ARCHIVES OF AGRONOMY AND SOIL SCIENCE,2020,66(13):1765-1779.
APA	Fan, Yanwei,Shao, Xiaoxia,Gong, Jiaguo,&Wang, Ying.(2020).An empirical model for estimating soil wetting pattern dimensions during film hole irrigation.ARCHIVES OF AGRONOMY AND SOIL SCIENCE,66(13),1765-1779.
MLA	Fan, Yanwei,et al."An empirical model for estimating soil wetting pattern dimensions during film hole irrigation".ARCHIVES OF AGRONOMY AND SOIL SCIENCE 66.13(2020):1765-1779.