干旱区生态环境知识资源中心(Arid): Modeling deficit irrigation-based evapotranspiration optimizes wheat yield and water productivity in arid regions

Arid

DOI	10.1016/j.agwat.2021.107122
	Modeling deficit irrigation-based evapotranspiration optimizes wheat yield and water productivity in arid regions
	Kheir, Ahmed M. S.; Alrajhi, Abdullah A.; Ghoneim, Adel M.; Ali, Esmat F.; Magrashi, Ali; Zoghdan, Medhat G.; Abdelkhalik, Sedhom A. M.; Fahmy, Ahmed E.; Elnashar, Abdelrazek
通讯作者	Kheir, AMS (corresponding author), Agr Res Ctr, Soils Water & Environm Res Inst, Giza, Egypt.
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2021
卷号	256
英文摘要	Climate change and water scarcity have put food security and sustainable development in arid regions at risk. Irrigation based actual evapotranspiration (ETc) has recently been added as a new tool in the Decision Support System for Agrotechnology Transfer (DSSAT) models and might improve irrigation water management, thus more research is needed. For this purpose, three Wheat models (CERES, CROPSIM and N-Wheat) in the latest version of DSSAT (v. 4.7.5) were calibrated and evaluated using experimental field data across three growing seasons. Field data included irrigation by different fractions of ETc as 80%, 100% and 120%. The calibrated models were then employed to predict wheat grain yield (GY), biomass yield (BY), irrigation, evapotranspiration, water use efficiency-based evapotranspiration (WUE_ET), and water use efficiency-based irrigation (WUE_Irri) for 10 locations represent Nile delta in long term simulation (1991-2020). The models showed robust simulations of ETc compared to observed values under all corresponding treatments, demonstrating high calibration accuracy and the ability to predict yield and water for other locations in the long term. Simulation treatments included automatic irrigation with different fractions of 50%, 60%, 70%, 80%, 90% and 100% from ETc. Hereinafter, the simulated GY and WUE_ET were compared with those obtained by farmers in all locations to specify the recommended treatment achieving higher yield and water productivity. In all locations, simulated GY and BY ranged (4000-9000 kg ha-1), and (10,500-18,000 kg ha-1), respectively with associated uncertainty between treatments and locations. Averaged over ten locations, and 30 years, the simulated GY under full irrigation treatment (100% ETc), showed the superiority with an increase of 27.5%, 13.0%, 5.0%, 1.5%, and 0.4% relative to irrigation with 50%, 60%, 70%, 80%, and 90% ETc, respectively. Deficit irrigation-based ET decreased WUE_Irri, whilst increased WUE_ET, achieving the higher value (20.0 kg ha-1 mm-1) with irrigation based 90% ETc. However, deficit irrigation with 90% ETc (I5) produced higher WUE values than full irrigation (100% ETc), with increases of 0.08% and 10.6% for WUE_ET and WUE_irri, respectively. Comparing simulated GY and WUE_ET with farmers values in all locations, simulated values under irrigation based 90% ETc increased by 1.7% and 63%, respectively, confirming the importance of irrigation scheduling based 90% ETc in maximizing wheat yield and water productivity in arid regions.
英文关键词	Irrigation scheduling Water use efficiency Evapotranspiration Long-term simulation Uncertainty DSSAT
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000691196200006
WOS关键词	MAIZE ; STRESS ; GROWTH ; PHENOLOGY
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
来源机构	King Saud University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362370
作者单位	[Kheir, Ahmed M. S.; Zoghdan, Medhat G.] Agr Res Ctr, Soils Water & Environm Res Inst, Giza, Egypt; [Kheir, Ahmed M. S.] Int Ctr Biosaline Agr, Directorate Programs, Dubai 14660, U Arab Emirates; [Alrajhi, Abdullah A.] King Abdulaziz City Sci & Technol KACST, King Abdullah Rd, Riyadh 11442, Saudi Arabia; [Ghoneim, Adel M.] King Saud Univ, Coll Food & Agr Sci, Dept Soil Sci, POB 2460, Riyadh 11451, Saudi Arabia; [Ali, Esmat F.; Magrashi, Ali] Taif Univ, Coll Sci, Dept Biol, POB 11099, At Taif 21944, Saudi Arabia; [Abdelkhalik, Sedhom A. M.] Agr Res Ctr, Field Crops Res Inst FCRI, Wheat Res Dept, Giza, Egypt; [Fahmy, Ahmed E.] Atom Energy Author, Soil & Water Res Dept, Nucl Res Ctr, Abou Zaabl 13759, Egypt; [Elnashar, Abdelrazek] Chinese Acad Sci, Aerosp Informat Res Inst, State Key Lab Remote Sensing Sci, Beijing 100094, Peoples R China
推荐引用方式 GB/T 7714	Kheir, Ahmed M. S.,Alrajhi, Abdullah A.,Ghoneim, Adel M.,et al. Modeling deficit irrigation-based evapotranspiration optimizes wheat yield and water productivity in arid regions[J]. King Saud University,2021,256.
APA	Kheir, Ahmed M. S..,Alrajhi, Abdullah A..,Ghoneim, Adel M..,Ali, Esmat F..,Magrashi, Ali.,...&Elnashar, Abdelrazek.(2021).Modeling deficit irrigation-based evapotranspiration optimizes wheat yield and water productivity in arid regions.AGRICULTURAL WATER MANAGEMENT,256.
MLA	Kheir, Ahmed M. S.,et al."Modeling deficit irrigation-based evapotranspiration optimizes wheat yield and water productivity in arid regions".AGRICULTURAL WATER MANAGEMENT 256(2021).