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	Evaluation on the potential of improving border irrigation performance through border dimensions optimization: a case study on the irrigation districts along the lower Yellow River
	Chen B. ; Ouyang Z. ; Sun Z. G. ; Wu L. F. ; Li F. D.
	2013
关键词	north china plain crop production water salinity management level basin groundwater precision drainage
英文摘要	In the Yucheng region along the lower reach of the Yellow River, current border irrigation systems in all three irrigation districts have low irrigation performances with the applied depth per irrigation event > 150 mm, and application efficiency < 65 %. It is often difficult to change irrigation practices, and rates of adoption are usually slow for China's small-scale farmers. This study emphasizes the feasibility of optimizing border dimensions in border irrigation taking into consideration the existing irrigation conditions and farmers' methods of irrigation practice. The performances of current border irrigation systems and improved systems were evaluated using agricultural irrigation survey data, field experimental data, and a simulation model. The irrigation conditions, that is, inflow rate, border dimensions, and relative cutoff distance, in the irrigation districts were found to be diverse. However, after border dimensions were optimized through simulation and field testing, it was determined that the applied depth per irrigation event could be decreased by an average of 49 mm, and the application efficiency could be increased on average by 26.7 % in the three irrigation districts. The annual potential amount of water savings among the three districts was calculated to be approximately 5,551 x 10(4) m(3) in the Yucheng region. Optimizing border dimensions is a practical technology for small-scale farming practices in the irrigation districts along the lower Yellow River.
出处	Irrigation Science
卷	31
期	4
页	715-728
收录类别	SCI
语种	英语
ISSN号	0342-7188
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/30638]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Chen B.,Ouyang Z.,Sun Z. G.,et al. Evaluation on the potential of improving border irrigation performance through border dimensions optimization: a case study on the irrigation districts along the lower Yellow River. 2013.

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