Spatial distribution and simulation of soil moisture and salinity under mulched drip irrigation combined with tillage in an arid saline irrigation district, northwest China

doi:10.1016/j.agwat.2017.12.032

	Spatial distribution and simulation of soil moisture and salinity under mulched drip irrigation combined with tillage in an arid saline irrigation district, northwest China
	Qi, Zhijuan 1,2; Feng, Hao 2,3; Zhao, Ying 2,4; Zhang, Tibin 2,3; Yang, Aizheng 1; Zhang, Zhongxue 1
刊名	AGRICULTURAL WATER MANAGEMENT
	2018-03-31
卷号	201 页码:219-231
关键词	Soil moisture Soil salinity Mulched drip irrigation Tillage HYDRUS-2D
ISSN号	0378-3774
DOI	10.1016/j.agwat.2017.12.032
通讯作者	Feng, Hao(nercwsi@vip.sina.com) ; Zhao, Ying(yzhaosoils@gmail.com)
英文摘要	Hetao Irrigation District, a large irrigation district in arid area, northwest China, is suffering from the decreasing water supply and increasing soil salinization. Mulched drip irrigation is widely used for agricultural production in arid area, and tillage management affects soil environment variously. This study aimed to explore combined effects of tillage and mulching modes on soil water and salt transfer under drip irrigation. The experiment included 4 treatments: ridge tillage with full film mulching (RFM), ridge tillage with partial film mulching (RPM), flat tillage with full film mulching (FFM) and flat tillage with partial film mulching (FPM). The results showed that RFM increased soil moisture in root zone (0-40 cm). Soil salt was pushed to the edge of soil wetting front and, RFM and FFM reduced salt accumulation in 0-70 layer significantly than RPM and FPM, indicating that full film mulching could retard the upward movement of soil salt more effectively. Furthermore, the performance of HYDRUS-2D was calibrated and evaluated by comparing the simulated values with observed values, and further verified model by another year dataset, to simulate the spatial distributions of soil water and salt in the two directions under mulched drip irrigation with different irrigation quantity. The simulation showed that the wetted region was expanded to the middle position of the film and the uniformity of irrigation increased with the increasing irrigation amount. In addition, the increasing of assumed irrigation amount induced soil desalination and make soil salinity spatial movement meet a discipline that the direction parallel to the drip line was lower than that perpendicular to the line at the same distance. In all, RFM could be adopted for optimizing soil water-salt regulation under drip irrigation in Hetao Irrigation District, and the model presented here is an efficient approach for investigating the regulation mechanisms of root-zone water and salt dynamics under mulching and/or tillage. (C) 2018 Elsevier B.V. All rights reserved.
资助项目	National High Technology Research and Development Program of China[2013AA102904] ; National Natural Science Foundation of China[41371234] ; National Natural Science Foundation of China[41371233] ; National Natural Science Foundation of China[51509238] ; 111 Project from the Ministry of Education ; State Administration of Foreign Experts Affairs[B12007]
WOS关键词	WATER-USE EFFICIENCY ; SALT TOLERANCE ; HEAT-TRANSPORT ; ROOT WATER ; YIELD ; FLOW ; DYNAMICS ; HYDRUS-2D ; GROWTH ; MAIZE
WOS研究方向	Agriculture ; Water Resources
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000429630800022
资助机构	National High Technology Research and Development Program of China ; National Natural Science Foundation of China ; 111 Project from the Ministry of Education ; State Administration of Foreign Experts Affairs
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/60264]
专题	中国科学院地理科学与资源研究所
通讯作者	Feng, Hao; Zhao, Ying
作者单位	1.Northeast Agr Univ, Coll Water Conservancy & Civil Engn, Harbin 150030, Heilongjiang, Peoples R China 2.Northwest A&F Univ, Inst Water Saving Agr Arid Areas China, Yangling 712100, Peoples R China 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Peoples R China 4.Ludong Univ, Coll Resources & Environm Engn, Yantai 264025, Peoples R China
推荐引用方式 GB/T 7714	Qi, Zhijuan,Feng, Hao,Zhao, Ying,et al. Spatial distribution and simulation of soil moisture and salinity under mulched drip irrigation combined with tillage in an arid saline irrigation district, northwest China[J]. AGRICULTURAL WATER MANAGEMENT,2018,201:219-231.
APA	Qi, Zhijuan,Feng, Hao,Zhao, Ying,Zhang, Tibin,Yang, Aizheng,&Zhang, Zhongxue.(2018).Spatial distribution and simulation of soil moisture and salinity under mulched drip irrigation combined with tillage in an arid saline irrigation district, northwest China.AGRICULTURAL WATER MANAGEMENT,201,219-231.
MLA	Qi, Zhijuan,et al."Spatial distribution and simulation of soil moisture and salinity under mulched drip irrigation combined with tillage in an arid saline irrigation district, northwest China".AGRICULTURAL WATER MANAGEMENT 201(2018):219-231.