干旱区生态环境知识资源中心(Arid): Effects of soil texture and groundwater level on leaching of salt from saline fields in Kesem irrigation scheme, Ethiopia

Arid

DOI	10.17221/137/2018-SWR
	Effects of soil texture and groundwater level on leaching of salt from saline fields in Kesem irrigation scheme, Ethiopia
	Gelaye, Kidia K.1,2; Zehetner, Franz 3; Loiskandl, Willibald 1; Klik, Andreas 1
通讯作者	Gelaye, Kidia K.
来源期刊	SOIL AND WATER RESEARCH
ISSN	1801-5395
EISSN	1805-9384
出版年	2019
卷号	14 期号:4 页码:221-228
英文摘要	In Ethiopia, soil salinity has become a challenge for agricultural production in irrigated arid and semi-arid areas. This research investigates the effectiveness of leaching salt remediation under different soil textures and groundwater tables. Leaching was conducted in the bare parts of three abandoned saline fields. Soil texture of Field 1 (F1) is sandy loam while Field 2 (F2) and Field 3 (F3) are clay loam. The F1, F2, and F3 groundwater was located at 1.8, 1.5 and > 3 m, respectively. The leaching requirement water levels were 15, 20, 25, and 30% higher than the evaporation of the bare field needed for four consecutive weeks, respectively. The results of this study show that, after four days of leaching, the salinity of F1 with sandy loam texture was significantly (P < 0.05) and more strongly reduced than for the other fields exhibiting clay loam texture. For F1, salinity was reduced from 16.3 to 6.2 dS/m and from 12.4 to 5.5 dS/m at depths of 0-30 and 30-60 cm, respectively. In head parts of F1 and F3, the salinity level was reduced to 2.0 dS/m. However, in F2 with shallow groundwater and clay loam texture, the salinity levels were slightly higher after leaching, i.e. from 11.2 to 12.0 dS/m and from 8.1 to 11.6 dS/m at 0-30 and 30-60 cm depths, respectively. In our experiment, effective leaching was achieved only in the field with sandy soil and deeper groundwater table. We saw that the application of leaching with surface drainage at shallow groundwater levels may further exacerbate salinity problems. For such situations, the use of subsurface drainage could sustain the groundwater depth and prevent additional salinization. On clay-textured fields with shallow groundwater table, a prolonged leaching application is necessary to reduce the salt contents.
英文关键词	arid furrow irrigation leaching soil salinity water
类型	Article
语种	英语
国家	Austria ; Ethiopia
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000489320700005
WOS关键词	WATER ; MANAGEMENT ; LAND
WOS类目	Soil Science ; 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/2XILL650/218870
作者单位	1.Univ Nat Resources & Life Sci Vienna, Inst Hydraul & Rural Water Management, Dept Water Atmosphere Environm, Vienna, Austria; 2.Samara Univ, Samara, Ethiopia; 3.Univ Nat Resources & Life Sci Vienna, Inst Soil Res, Dept Forest & Soil Sci, Vienna, Austria
推荐引用方式 GB/T 7714	Gelaye, Kidia K.,Zehetner, Franz,Loiskandl, Willibald,et al. Effects of soil texture and groundwater level on leaching of salt from saline fields in Kesem irrigation scheme, Ethiopia[J],2019,14(4):221-228.
APA	Gelaye, Kidia K.,Zehetner, Franz,Loiskandl, Willibald,&Klik, Andreas.(2019).Effects of soil texture and groundwater level on leaching of salt from saline fields in Kesem irrigation scheme, Ethiopia.SOIL AND WATER RESEARCH,14(4),221-228.
MLA	Gelaye, Kidia K.,et al."Effects of soil texture and groundwater level on leaching of salt from saline fields in Kesem irrigation scheme, Ethiopia".SOIL AND WATER RESEARCH 14.4(2019):221-228.