干旱区生态环境知识资源中心(Arid): A smart capillary barrier-wick irrigation system for home gardens in arid zones

Arid

DOI	10.1007/s00271-020-00666-3
	A smart capillary barrier-wick irrigation system for home gardens in arid zones
	Al-Mayahi, A.1; Al-Ismaily, S.1; Al-Maktoumi, A.1; Al-Busaidi, H.1; Kacimov, A.1; Janke, R.2; Bouma, J.3; Simunek, J.4
通讯作者	Al-Ismaily, S.
来源期刊	IRRIGATION SCIENCE
ISSN	0342-7188
EISSN	1432-1319
出版年	2020
卷号	38 期号:3 页码:235-250
英文摘要	New water-conserving irrigation technologies are vital in arid countries. We investigated the effects of (i) soil substrates made of Smart Capillary Barrier Wick (SCB-W), consisting of silt loam blocks surrounded by sand-sheathes and irrigated with a sand wick cylinder (WC) as compared to a control (homogenous soil irrigated by the same wick system, HW), (ii) WC diameters (2.54 cm vs. 1.27 cm), and (iii) 2-cm sand mulch layer on soil-water dynamics during wetting-drying cycles. Field experiments with pots and HYDRUS (2D/3D) modeling were performed in two consecutive phases (with and without sand mulch). Analysis of variance at p < 0.05 was used to assess significant differences in measured water contents, theta, between the two substrates. For the wetting/drying cycles, the modeled and measured theta are in satisfactory/tolerable agreement, as documented by the model evaluation criteria, which are within acceptable ranges (the root mean squared error, RMSE 0.01-0.06; Nash-Sutcliffe coefficient, NSE 0.51-0.97, and Willmott index, d = 0.97-1). SCB-W wets the soil substrate about two times faster than HW during the wetting cycles (p < 0.05). Reducing the WC diameter prolonged the wetting time by 1 and 2 days for SCB-W and HW, respectively, the same trend of two times faster wetting of SCB-W compared to HW was maintained. SCB-W showed higher theta storage (by 44.3-52.4%) at the bottom part of the composite than HW (p < 0.05). The sand mulch layer reduced evaporation and resulted in 20 and 38.9% higher theta during the drying cycle for both the bottom and top sensors, respectively, in both substrates (p < 0.05). SCB-W could improve water conservation in home gardens.
类型	Article
语种	英语
国家	Oman ; Netherlands ; USA
收录类别	SCI-E
WOS记录号	WOS:000516359000001
WOS关键词	SOLUTE TRANSPORT ; WATER ; SOIL ; PARAMETERS ; DISTRIBUTIONS ; DESIGN ; SENSOR ; CONDUCTIVITY ; INFILTRATION ; TEMPERATURE
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314825
作者单位	1.Sultan Qaboos Univ, Dept Soils Water & Agr Engn, Muscat 123, Oman; 2.Sultan Qaboos Univ, Dept Crop Sci, Muscat 123, Oman; 3.Wageningen Univ & Res, Soil Sci, Wageningen, Netherlands; 4.Univ Calif Riverside, Dept Environm Sci, Riverside, CA 92521 USA
推荐引用方式 GB/T 7714	Al-Mayahi, A.,Al-Ismaily, S.,Al-Maktoumi, A.,et al. A smart capillary barrier-wick irrigation system for home gardens in arid zones[J],2020,38(3):235-250.
APA	Al-Mayahi, A..,Al-Ismaily, S..,Al-Maktoumi, A..,Al-Busaidi, H..,Kacimov, A..,...&Simunek, J..(2020).A smart capillary barrier-wick irrigation system for home gardens in arid zones.IRRIGATION SCIENCE,38(3),235-250.
MLA	Al-Mayahi, A.,et al."A smart capillary barrier-wick irrigation system for home gardens in arid zones".IRRIGATION SCIENCE 38.3(2020):235-250.