干旱区生态环境知识资源中心(Arid): Optimizing irrigation and drainage by considering agricultural hydrological process in arid farmland with shallow groundwater

Arid

DOI	10.1016/j.jhydrol.2020.124785
	Optimizing irrigation and drainage by considering agricultural hydrological process in arid farmland with shallow groundwater
	Li, Xuemin; Zhang, Chenglong; Huo, Zailin
通讯作者	Huo, Zailin
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2020
卷号	585
英文摘要	Agricultural production in arid and semi-arid area faces a global problem of water resources shortage and land salinization. Irrigation and drainage are the important measure to enhance crop yield and control soil salinity. Generally, at field scale only irrigation is optimized to pursue the higher water use efficiency and crop yield, while drainage is difficult to optimize owing to controlled by dynamic groundwater levels. Here, we develop a new collaborative optimization model of irrigation and drainage to improve irrigation water use efficiency and to control soil salinity. The model is formulated by integrating simulation of physical processes of field water - salt balance and a genetic algorithm-based optimization model. The new model is to search optimized irrigation and drainage strategic decision for enhancing field economic benefit with the condition controlling salinity with limited water resources. Then, a case study on optimally allocating irrigation and drainage water to different growth stages of maize field in the Hetao Irrigation District, arid area of northwest China shows enhanced applicability of the developed model. Five groundwater depth levels (1 m, 1.5 m, 2 m, 2.5 m and 3 m) and five groundwater salinity levels (2 g/L, 2.25 g/L, 2.5 g/L, 2.75 g/L and 3 g/L) are provided to show and compare the solutions of the optimal irrigation and drainage water allocation. Results indicate the developed model can supply reasonable field monthly irrigation and drainage decision with considering field hydrology, especially contribution of groundwater to crop water demand and groundwater role to soil salt accumulation. The contrary relationship between system benefit and irrigation water use efficiency was described successfully by the developed model. And compared with traditional single irrigation optimization model, the developed irrigation-drainage collaborative optimization model can enhance drainage function to keep the optimal groundwater levels and improve the system benefit by 0-8%. Overall, the developed model can provide more applicable irrigation water and drainage strategies to the sustainable development of irrigation agriculture.
英文关键词	Irrigation water allocation Optimization Agricultural drainage water Shallow groundwater Soil salinity
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000544230000046
WOS关键词	WATER-SAVING PRACTICES ; DEFICIT IRRIGATION ; CONJUNCTIVE USE ; SUSTAINABLE IRRIGATION ; SOIL SALINIZATION ; SURFACE-WATER ; CANAL SYSTEM ; SPRING WHEAT ; WINTER-WHEAT ; L. GROWTH
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319659
作者单位	China Agr Univ, China Agr Water Res Ctr, 17 Qinghua East Rd, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Li, Xuemin,Zhang, Chenglong,Huo, Zailin. Optimizing irrigation and drainage by considering agricultural hydrological process in arid farmland with shallow groundwater[J]. 中国农业大学,2020,585.
APA	Li, Xuemin,Zhang, Chenglong,&Huo, Zailin.(2020).Optimizing irrigation and drainage by considering agricultural hydrological process in arid farmland with shallow groundwater.JOURNAL OF HYDROLOGY,585.
MLA	Li, Xuemin,et al."Optimizing irrigation and drainage by considering agricultural hydrological process in arid farmland with shallow groundwater".JOURNAL OF HYDROLOGY 585(2020).