Salt leaching and response of Dianthus chinensis L. to saline water drip-irrigation in two coastal saline soils

doi:10.1016/j.agwat.2019.03.020

	Salt leaching and response of Dianthus chinensis L. to saline water drip-irrigation in two coastal saline soils
	Chen Zhang 1; Xiaobin Li 1; Yaohu Kang 1,2; Xunming Wang 1,2
刊名	AGRICULTURAL WATER MANAGEMENT
	2019-06-01
卷号	218 页码:8-16
关键词	Coastal saline soils Saline water drip irrigation Salt leaching Dianthus chinensis L. Salinity tolerance threshold
ISSN号	0378-3774
DOI	10.1016/j.agwat.2019.03.020
通讯作者	Xiaobin Li(lixbin@igsnrr.ac.cn)
英文摘要	Using of saline water is becoming an important approach to reclaim and utilize salt-affected soil for landscaping and agricultural purposes. A three-year field experiment was conducted in Hebei Province, North China to cultivate a perennial flower, Dianthus chinensis L., on two coastal saline soils of different textures, silt (27.79 dS.m(-1)) and sandy loam (27.33 dS.m(-1)), using the drip irrigation at five levels of water salinity (Ec(i) = 0.8, 3.1, 4.7, 6.3 and 7.8 dS.m(-1)). Effect of water salinity on salt distribution in soil profile and plant growth and physiological response were investigated. The irrigation water salinity tolerance threshold of D. chinensis in terms of shoot dry weight was also evaluated. Results shown that, after three growing seasons, the highly saline soils reclaimed to < 8 dS.m(-1) for silt soil and < 3 dS.m(-1) for sandy loam soil under ECi < 7.8 dS.m(-1). The soil salinity decreased with year and increased with increasing ECi. Better salt leaching effect occurred in sandy loam soil compared with silt soil. Plant height, clump diameter, and shoot dry weight as well as survival rate declined in response to increasing ECi, and survival rate of > 80% retained for all treatments in the third year. The decline of shoot K+ concentration, excessive accumulation of Na+, and concomitant reduction of K+/Na+ ratio were observed with increasing ECi. The irrigation water salinity thresholds of D. chinensis, aimed at biological production, are 3.17 dS.m(-1) for silt soil and 1.62 dS.m(-1) for sandy loam soil; for landscaping purpose, the corresponding values are 5.65 and 6.98 dS.m(-1).
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[2016YFC0501305] ; National Science and Technology Support Program - Ministry of Science and Technology[2014BAD12B05]
WOS关键词	GROWTH ; RECLAMATION ; STRESS ; YIELD ; QUALITY ; PLANTS ; CHINA
WOS研究方向	Agriculture ; Water Resources
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000467512800002
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 ; National Science and Technology Support Program - Ministry of Science and Technology
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/59837]
专题	中国科学院地理科学与资源研究所
通讯作者	Xiaobin Li
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chen Zhang,Xiaobin Li,Yaohu Kang,et al. Salt leaching and response of Dianthus chinensis L. to saline water drip-irrigation in two coastal saline soils[J]. AGRICULTURAL WATER MANAGEMENT,2019,218:8-16.
APA	Chen Zhang,Xiaobin Li,Yaohu Kang,&Xunming Wang.(2019).Salt leaching and response of Dianthus chinensis L. to saline water drip-irrigation in two coastal saline soils.AGRICULTURAL WATER MANAGEMENT,218,8-16.
MLA	Chen Zhang,et al."Salt leaching and response of Dianthus chinensis L. to saline water drip-irrigation in two coastal saline soils".AGRICULTURAL WATER MANAGEMENT 218(2019):8-16.