干旱区生态环境知识资源中心(Arid): Spatial and Temporal Characteristics of Infiltration Wetting Front of Ring-Shaped Root Emitters

Arid

DOI	10.3390/su14116712
	Spatial and Temporal Characteristics of Infiltration Wetting Front of Ring-Shaped Root Emitters
	Zhang, Jun; Li, Lin
通讯作者	Li, L
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2022
卷号	14 期号:11
英文摘要	Ring-shaped root emitter is a new type of emitter applicable to the roots of fruit trees in arid areas. To study the characteristics of infiltration wetting front changes in ring-shaped root emitters, the orthogonal test method was used to design nine groups of schemes for four factors: radius of irrigation ring R, burial depth H, number of orifices M, irrigation water volume V and their three levels (R = 20, 30 and 40 cm; M = 4, 6 and 8; H = 20, 30 and 40 cm, V = 40, 60 and 80 L). The infiltration process of these nine scenarios was simulated using HYDRUS-3D software. The results show that the interference infiltration time exhibited a good power function relationship with the irrigation ring radius, number of orifices and burial depth; before the interference infiltration, the wetting fronts were all in the shape of a rotating ellipsoid centered on the infiltration point and can be expressed by the equations of the upper and lower semi-elliptic curves relative to the infiltration point. With the increase in time, the wetting fronts were centered at the infiltration point and infiltrated in all directions at a different velocity. The transport rate decreased with time. The power function relationship between the wetting fronts and the influencing factors after the interference infiltration in different directions was established, and the coefficient of determination was above 0.888. The wetting front shape after infiltration stabilization can be regarded as a rotating body formed by the vertical wetting front plane around the z-axis. The wetted soil volume of deep percolation, surface and suitable infiltration scenarios was rugby-shaped, apple-shaped with a flattened top and complete apple-shaped, respectively. Burying the irrigation ring at slightly deeper than one-third of the crop root zone is recommended, and half of the horizontal range of the crop root system can be selected as the irrigation ring radius. The research results can provide a reference for selecting root emitter parameters and layout as well as developing a root irrigation system.
英文关键词	fruit tree root emitter interference infiltration wetting front spatial and temporal variation HYDRUS-3D water use efficiency
类型	Article
语种	英语
开放获取类型	gold, Green Submitted
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000808796000001
WOS关键词	SUBSURFACE DRIP IRRIGATION ; WATER-USE EFFICIENCY ; SURFACE ; YIELD ; PATTERNS ; SIMULATION ; SYSTEMS ; JUJUBE
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394589
推荐引用方式 GB/T 7714	Zhang, Jun,Li, Lin. Spatial and Temporal Characteristics of Infiltration Wetting Front of Ring-Shaped Root Emitters[J],2022,14(11).
APA	Zhang, Jun,&Li, Lin.(2022).Spatial and Temporal Characteristics of Infiltration Wetting Front of Ring-Shaped Root Emitters.SUSTAINABILITY,14(11).
MLA	Zhang, Jun,et al."Spatial and Temporal Characteristics of Infiltration Wetting Front of Ring-Shaped Root Emitters".SUSTAINABILITY 14.11(2022).