Effect of the micro-sprinkler irrigation method with treated effluent on soil physical and chemical properties in sea reclamation land

doi:10.1016/j.agwat.2018.10.023

	Effect of the micro-sprinkler irrigation method with treated effluent on soil physical and chemical properties in sea reclamation land
	Li, Na 1; Kang, Yaohu 1,2; Li, Xiaobin 1; Wan, Shuqin 1; Xu, Jiachong 1,3
刊名	AGRICULTURAL WATER MANAGEMENT
	2019-03-01
卷号	213 页码:222-230
关键词	Salt leaching Irrigation management Tall fescue Saline soil
ISSN号	0378-3774
DOI	10.1016/j.agwat.2018.10.023
通讯作者	Kang, Yaohu(kangyh@igsnrr.ac.cn)
英文摘要	To develop a micro-sprinkler method with treated effluent for tall fescue (Festuca arundinacea) cultivation in sea reclamation land and test its effect on soil physical and chemical properties, a field experiment with five treatments of water quality was conducted in 2015-2016. The five treatments of water quality were created with a mixture of treated effluent (EC, 4.2-6.9 dS/m) and fresh groundwater, and the percentage of treated effluent was 0%, 25%, 50%, 75% and 100%. Saline soil contained a gravel-sand layer imbedded at depth of 60 cm. Irrigation management was divided into three stages, enhanced salt leaching stage (continuous irrigation), water-salt regulation stage (irrigation based on the soil matric potential (SMP) at - 5KPa) and normal irrigation stage (irrigation based on the SMP at - 20 KPa). The results indicated that the first stage lasted for 10 days, while the electrical conductivity of saturated extracts (ECe) of the surface 10 cm from 38.29 dS/m dropped to 4.23-6.28 dS/m. After the second stage (3.5 months), the ECe in the 0-60 cm soil layer dropped to 1.42-3.16 dS/m. During these stages, treatment with 50% treated effluent led to relatively good infiltration and lower salinity and was therefore good at enhancing the salt leaching efficiency. In the third stage, the observed ECe of the 0-60 cm changed slightly, but <= 75% treated effluent could maintain the soil salinity below the threshold salinity of tall fescue, even in the rainless season. During the process, soil sodium adsorption ratio decreased, while soil pH increased first and then decreased. Soil available phosphorus content showed a close correlation with treated effluent and the biomass of tall fescue. Moreover, the tall fescue maintained normal growth. Therefore, it is possible to use treated effluent to micro-sprinkler irrigation on tall fescue in sea reclamation land.
资助项目	Key Research Program of Frontier Sciences of the Chinese Academy of Sciences[QYZDJ-SSW-DQC028] ; National Science Foundation for Young Scientists of China[51709251] ; National Key Research and Development Program of China[2016YFC0501304] ; National Key Research and Development Program of China[2014BAD12B05] ; National Key Research and Development Program of China[2016YFC0501305]
WOS关键词	WASTE-WATER IRRIGATION ; DRIP-IRRIGATION ; SALINITY MANAGEMENT ; COASTAL SOILS ; QUALITY ; REUSE ; PLANT ; CHINA
WOS研究方向	Agriculture ; Water Resources
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000457952700022
资助机构	Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; National Science Foundation for Young Scientists of China ; National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/49401]
专题	中国科学院地理科学与资源研究所
通讯作者	Kang, Yaohu
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, 11A Datun Rd, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Na,Kang, Yaohu,Li, Xiaobin,et al. Effect of the micro-sprinkler irrigation method with treated effluent on soil physical and chemical properties in sea reclamation land[J]. AGRICULTURAL WATER MANAGEMENT,2019,213:222-230.
APA	Li, Na,Kang, Yaohu,Li, Xiaobin,Wan, Shuqin,&Xu, Jiachong.(2019).Effect of the micro-sprinkler irrigation method with treated effluent on soil physical and chemical properties in sea reclamation land.AGRICULTURAL WATER MANAGEMENT,213,222-230.
MLA	Li, Na,et al."Effect of the micro-sprinkler irrigation method with treated effluent on soil physical and chemical properties in sea reclamation land".AGRICULTURAL WATER MANAGEMENT 213(2019):222-230.