Changes in soil-water content and heat transport under different simulated systems of drip irrigation in gravel-mulched fields

doi:10.2166/ws.2021.262

	Changes in soil-water content and heat transport under different simulated systems of drip irrigation in gravel-mulched fields
	Zhao, Wenju; Wang, Yali; Hu, Junhong; Li, Zongli
刊名	WATER SUPPLY
	2021-08
卷号	22 期号:1 页码:452-461
关键词	gravel mulched field irrigation frequency irrigation quotas numerical simulation water and heat distribution
ISSN号	1606-9749
DOI	10.2166/ws.2021.262
英文摘要	Gravel mulching is an ancient mulching system with a history of more than 300 years in China. To explore the changes of soil-water content (SWC) and heat transport in watermelon gravel-mulched fields under the drip irrigation, we simulated three irrigation quotas (W1, 180 m(3)/hm(2); W2, 270 m(3)/hm(2); and W3, 360 m(3)/hm(2)) and three irrigation frequencies (F1, three times; F2, six times; and F3, nine times) based on HYDRUS-2D. The results indicated that peak SWC increased with irrigation quota. The range of fluctuation of SWC decreased as irrigation frequency increased. The temperature of the 0-40 cm soil layer varied with air temperature, but the range of fluctuation decreased with depth. Irrigation affected the distribution of soil water, increased soil heat capacity, and reduced the impact of air temperature on soil temperature, thus delaying the impact of air temperature on soil temperature. High-frequency drip irrigation could therefore effectively improve SWC, reduce water stress during the period of watermelon growth, and effectively delay the effect of air temperature on soil temperature, providing a theoretical basis for developing reasonable irrigation strategies and regulating soil water and heat in gravel-mulched fields.
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
语种	英语
出版者	IWA PUBLISHING
WOS记录号	WOS:000687619800001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148609]
专题	能源与动力工程学院
作者单位	Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Wenju,Wang, Yali,Hu, Junhong,et al. Changes in soil-water content and heat transport under different simulated systems of drip irrigation in gravel-mulched fields[J]. WATER SUPPLY,2021,22(1):452-461.
APA	Zhao, Wenju,Wang, Yali,Hu, Junhong,&Li, Zongli.(2021).Changes in soil-water content and heat transport under different simulated systems of drip irrigation in gravel-mulched fields.WATER SUPPLY,22(1),452-461.
MLA	Zhao, Wenju,et al."Changes in soil-water content and heat transport under different simulated systems of drip irrigation in gravel-mulched fields".WATER SUPPLY 22.1(2021):452-461.