Improving/maintaining water-use efficiency and yield of wheat by deficit irrigation: A global meta-analysis

doi:10.1016/j.agwat.2019.105906

	Improving/maintaining water-use efficiency and yield of wheat by deficit irrigation: A global meta-analysis
	Yu, Liuyang 4,6; Zhao, Xining 1,2,3; Gao, Xiaodong 1,2,3; Siddique, Kadambot H. M.5
刊名	AGRICULTURAL WATER MANAGEMENT
	2020-02-20
卷号	228 页码:10
关键词	Limited irrigation Yield Water-use efficiency Meta-analysis Win-win Trade-off
ISSN号	0378-3774
DOI	10.1016/j.agwat.2019.105906
通讯作者	Zhao, Xining()
英文摘要	Population growth and climate change are necessitating increases in food production and reduction in amounts of water used for agriculture. Deficit irrigation has been proposed as a strategy to maintain/increase yield while reducing the use of water in agriculture; however, it has not been widely adopted, in part, due to risk of reduced yield. In this paper, we describe a meta-analysis designed to quantify effects of deficit irrigation on wheat water-use efficiency (WUE) and yields, and identify optimal strategies for deploying deficit irrigation to achieve win-win effects of improving WUE and yield simultaneously. Overall, the meta-analysis of 41 peer-reviewed publications collectively containing over 381 observations showed that the win-win relationship between WUE and wheat yield does exist. Overall, deficit irrigation improved wheat WUE by 6.6 % but decreased yield by 16.2 %. However, the results varied, depending on irrigation methods (such as irrigation type, timing and water amount) and environmental factors (such as precipitation, temperature and soil properties). In order to maximize win-win effects and minimize tradeoff between WUE and yield, we found that deficit irrigation is most appropriate for areas where total precipitation during the growing season is less than 200 mm and the soil is loamy or sandy. Deficit irrigation using border and furrow irrigation is more likely to achieve high WUE and yield concurrently than drip or sprinkler irrigation. Importantly, we found that the most influential factors affecting yield and WUE are the irrigation level, and the irrigation thresholds to achieve various scenarios between WUE and yield. Our findings suggest deficit irrigation can improve yield and WUE simultaneously, and identifies the conditions under which these improvements can be realized.
资助项目	National Key Research and Development Program of China[2017YFC0403600] ; National Natural Science Foundation of China[41771316] ; National Natural Science Foundation of China[41571506] ; National Natural Science Foundation of China[51579212] ; Shaanxi Innovative Research Team for Key Science and Technology[2017KCT15] ; Young Elite Cultivation program of Northwest AF University
WOS关键词	WINTER-WHEAT ; CLIMATE-CHANGE ; LIMITED-IRRIGATION ; FOOD SECURITY ; LOESS PLATEAU ; CROP YIELD ; CHINA ; ROOT ; MANAGEMENT ; STRESS
WOS研究方向	Agriculture ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000525279000036
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Shaanxi Innovative Research Team for Key Science and Technology ; Young Elite Cultivation program of Northwest AF University
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/133659]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhao, Xining
作者单位	1.Natl Engn Res Ctr Water Saving & Irrigat Technol, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 3.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 4.Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China 5.Univ Western Australia, UWA Inst Agr, LB 5005, Perth, WA 6001, Australia 6.Northwest A&F Univ, Key Lab Agr Soil & Water Engn Arid & Semiarid Are, Minist Educ, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Yu, Liuyang,Zhao, Xining,Gao, Xiaodong,et al. Improving/maintaining water-use efficiency and yield of wheat by deficit irrigation: A global meta-analysis[J]. AGRICULTURAL WATER MANAGEMENT,2020,228:10.
APA	Yu, Liuyang,Zhao, Xining,Gao, Xiaodong,&Siddique, Kadambot H. M..(2020).Improving/maintaining water-use efficiency and yield of wheat by deficit irrigation: A global meta-analysis.AGRICULTURAL WATER MANAGEMENT,228,10.
MLA	Yu, Liuyang,et al."Improving/maintaining water-use efficiency and yield of wheat by deficit irrigation: A global meta-analysis".AGRICULTURAL WATER MANAGEMENT 228(2020):10.