Response of Spring Wheat (Triticum aestivum) to Deficit Irrigation Management under the Semi-Arid Environment of Egypt: Field and Modeling Study

被引:5
|
作者
Ouda, Samiha [1 ]
Noreldin, Tahany [1 ]
Alarcon, Juan Jose [2 ]
Ragab, Ragab [3 ]
Caruso, Gianluca [4 ]
Sekara, Agnieszka [5 ]
Abdelhamid, Magdi T. [6 ]
机构
[1] Agr Res Ctr, Water Requirements & Field Irrigat Res Dept, Soils Water & Environm Res Inst, Giza 12619, Egypt
[2] CEBAS CSIC, Irrigat Dept, Campus Univ Espinardo, Murcia 30100, Spain
[3] UK Ctr Ecol & Hydrol UK CEH, Wallingford OX10 8BB, Oxon, England
[4] Univ Naples Federico II, Dept Agr Sci, I-80055 Naples, Italy
[5] Univ Agr, Fac Biotechnol & Hort, Dept Hort, PL-31120 Krakow, Poland
[6] Natl Res Ctr, Dept Bot, 33 El Bohouth St, Giza 12622, Egypt
来源
AGRICULTURE-BASEL | 2021年 / 11卷 / 02期
基金
欧盟第七框架计划;
关键词
CropSyst model; deficit irrigation; arid environment; wheat irrigation; CERES-WHEAT; WATER; CROPSYST; YIELD; L; GENOTYPES; SOIL;
D O I
10.3390/agriculture11020090
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
In many areas of the world, water shortages prevail and threaten food production. Deficit irrigation was commonly investigated in dry areas as a precious and sustainable production approach. Using the CropSyst model to simulate the effects of different deficit irrigation treatments could help draw conclusions and save time, effort, and money. Therefore, the aims of this research were (i) to calibrate and validate the CropSyst model for wheat under different sustained and phenological stage-based deficit irrigation treatments, (ii) to simulate the impacts of the latter treatments on limiting wheat yield reduction. Two field experiments were conducted in Nubaria (Egypt), representing an arid environment. They included seven irrigation treatments: (1) 100%, (2) 75%, or (3) 50% of crop evapotranspiration (ETc) during the whole crop cycle; (4) 50% ETc at tillering only, or (5) at booting only, or (6) at grain filling only, or (7) at both tillering and grain filling, with the replenishment of 100% ETc to the treatments (4) to (7) in the remaining phenological stages. The results revealed that phenological stage-based deficit irrigation of wheat resulted in lower yield reduction compared to sustained deficit irrigation treatments, with a 6% yield reduction when 50% ETc was applied at the booting stage. Wheat yield loss was reduced to 4 or 6% when 95 or 90% of ETc were applied, respectively. The CropSyst model accurately simulated wheat grain and total dry matter under deficit irrigation with low RMSE value. In conclusion, the CropSyst model can be reliably used for evaluating the strategy of planned deficit irrigation management in terms of wheat production under the arid environment.
引用
收藏
页码:1 / 13
页数:13
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