干旱区生态环境知识资源中心(Arid): Effect of Drip Irrigation on Soil Water Balance and Water Use Efficiency of Maize in Northwest China

Arid

DOI	10.3390/w13020217
	Effect of Drip Irrigation on Soil Water Balance and Water Use Efficiency of Maize in Northwest China
	Wang, Yahui; Li, Sien; Cui, Yaokui; Qin, Shujing; Guo, Hui; Yang, Danni; Wang, Chunyu
通讯作者	Li, SE (corresponding author), China Agr Univ, Ctr Agr Water Res China, Beijing 100083, Peoples R China. ; Li, SE (corresponding author), Minist Agr & Rural Affairs, Shiyanghe Expt Stn Improving Water Use Efficiency, Wuwei 733000, Peoples R China. ; Cui, YK (corresponding author), Peking Univ, Inst Remote Sensing & GIS, Sch Earth & Space Sci, Beijing 100871, Peoples R China.
来源期刊	WATER
EISSN	2073-4441
出版年	2021
卷号	13 期号:2
英文摘要	Drip irrigation (DI) has been widely utilized for crops and its water-saving effect has been confirmed by numerous studies. However, whether this technology can save so much water under the field scale during practical application is still uncertain. In order to answer this question, evapotranspiration (ET), soil water content, transpiration and evaporation over the DI and border irrigation (BI) in an arid area of NW China were continuously measured by two eddy covariance systems, micro-lysimeters, the packaged stem sap flow gauges and CS616 sensors during 2014-2018 growing seasons. The results showed that the DI averagely increased crop water use efficiency (CWUE) by 11% per year against BI. The deep drainage under DI treatment was lower than BI by 8% averagely for the five-year period. While for the ET, the DI averagely decreased ET by 7% and 40mm per year against the traditional BI. The decrease in ET was mainly due to the significant reduction in soil evaporation instead of transpiration. Oppositely, we found that DI may increase maize (Zea mays L.) transpiration in some year for the better preponderant growth of crop. Thus, the accelerating effect on transpiration of DI and its reducing effect on soil evaporation should be considered simultaneously. In our experiment, DI only improved CWUE and WUE (water use efficiency) by 11% and 15% on average in a large farmland scale, unable to always be more than a 20% improvement, as concluded by many other field experiments. Consequently, the water-saving effect of DI should not be overestimated in water resource evaluation.
英文关键词	water use efficiency border irrigation drip irrigation soil water balance
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000611791900001
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
来源机构	中国农业大学 ; 北京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348259
作者单位	[Wang, Yahui; Li, Sien; Qin, Shujing; Guo, Hui; Yang, Danni; Wang, Chunyu] China Agr Univ, Ctr Agr Water Res China, Beijing 100083, Peoples R China; [Wang, Yahui; Li, Sien; Qin, Shujing; Guo, Hui; Yang, Danni; Wang, Chunyu] Minist Agr & Rural Affairs, Shiyanghe Expt Stn Improving Water Use Efficiency, Wuwei 733000, Peoples R China; [Cui, Yaokui] Peking Univ, Inst Remote Sensing & GIS, Sch Earth & Space Sci, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yahui,Li, Sien,Cui, Yaokui,et al. Effect of Drip Irrigation on Soil Water Balance and Water Use Efficiency of Maize in Northwest China[J]. 中国农业大学, 北京大学,2021,13(2).
APA	Wang, Yahui.,Li, Sien.,Cui, Yaokui.,Qin, Shujing.,Guo, Hui.,...&Wang, Chunyu.(2021).Effect of Drip Irrigation on Soil Water Balance and Water Use Efficiency of Maize in Northwest China.WATER,13(2).
MLA	Wang, Yahui,et al."Effect of Drip Irrigation on Soil Water Balance and Water Use Efficiency of Maize in Northwest China".WATER 13.2(2021).