Arid
DOI10.1016/j.agwat.2015.01.013
Soil salinity management on raised beds with different furrow irrigation modes in salt-affected lands
Devkota, M.1,2; Gupta, R. K.3; Martius, C.2,4; Lamers, J. P. A.2; Devkota, K. P.5; Sayre, K. D.6; Vlek, P. L. G.2
通讯作者Devkota, M.
来源期刊AGRICULTURAL WATER MANAGEMENT
ISSN0378-3774
EISSN1873-2283
出版年2015
卷号152页码:243-250
英文摘要

Mismanagement of irrigation water and the ensuing secondary salinization are threatening the sustainability of irrigated agriculture especially in many dryland regions. The permanent raised-bed/furrow system, a water-wise conservation agriculture-based practice, is gaining importance for row- and high value-crops in irrigated agriculture. However, because of additional surface exposure and elevation, raised beds may be more prone to salt accumulation especially under shallow water table conditions. A field study was carried out in 2008 and 2009 in the Khorezm region, Central Asia, to investigate the effect of three furrow irrigation methods on salt dynamics of the soil and the performance of the cotton crop on the raised bed-furrow system. The irrigation methods compared included (i) Conventional furrow irrigation wherein every furrow was irrigated (EFI) at each irrigation event; (ii) Alternate skip furrow irrigation (ASFI where one of two neighbouring furrows were alternately irrigated during consecutive irrigations events; and (iii) Permanent skip furrow irrigation (PSFI) during which irrigation was permanently skipped in one of the two neighbouring furrows during all irrigation events. For salinity management with PSFI a ’managed salt accumulation and effective leaching’ approach was pursued.


The EFI method increased salt accumulatiorPon the top of the raised beds. In contrast, the PSFI method allowed an effective salt leaching from the top of the raised beds. After leaching, salinity on top of the beds under PSFI was reduced to <3 dS m(-1) compared to 5-6 dS m(-1) under ASF1 and EFI indicating an effective leaching with the PSFI method. Raw cotton (Gossypium hirsutum L., cv. Khorezm 127) yield was higher under the PSFI (2003 kg ha(-1)) method having yield increases of 984 kg ha(-1) (96% higher) and 787 kg ha(-1) (64% higher) than under EFI (1216 kg ha(-1)) and ASFI (1019 kg ha(-1)) methods, respectively. Better crop performance with PSFI was linked with the lesser salinization of the raised beds and a larger salt free root zone before the leaching events. In addition, the PSFI method reduced irrigation water demand contributed thus to minimizing secondary soil salinization. Thus, PSFI could be an effective method to manage the salt under raised beds in salt-affected irrigated arid regions. (C) 2015 Elsevier B.V. All rights reserved.


英文关键词Salt-leaching Raised beds Furrow irrigation Uzbekistan
类型Article
语种英语
国家Nepal ; Germany ; India ; Indonesia ; Philippines ; Mexico
收录类别SCI-E
WOS记录号WOS:000351806800024
WOS关键词ARAL SEA BASIN ; CENTRAL-ASIA ; SODIC SOIL ; AGRICULTURE ; DYNAMICS ; COTTON
WOS类目Agronomy ; 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/2XILL650/185597
作者单位1.Int Maize & Wheat Improvement Ctr CIMMYT, Kathmandu, Nepal;
2.Ctr Dev Res ZEF, D-53113 Bonn, Germany;
3.CIMMYT, Borlaug Inst South Asia, New Delhi, India;
4.CIFOR, Bogor, Indonesia;
5.IRRI, Manila, Philippines;
6.Int Maize & Wheat Improvement Ctr CIMMYT, Texcoco, Mexico
推荐引用方式
GB/T 7714
Devkota, M.,Gupta, R. K.,Martius, C.,et al. Soil salinity management on raised beds with different furrow irrigation modes in salt-affected lands[J],2015,152:243-250.
APA Devkota, M..,Gupta, R. K..,Martius, C..,Lamers, J. P. A..,Devkota, K. P..,...&Vlek, P. L. G..(2015).Soil salinity management on raised beds with different furrow irrigation modes in salt-affected lands.AGRICULTURAL WATER MANAGEMENT,152,243-250.
MLA Devkota, M.,et al."Soil salinity management on raised beds with different furrow irrigation modes in salt-affected lands".AGRICULTURAL WATER MANAGEMENT 152(2015):243-250.
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