Abstract
Improving winter wheat water use efficiency in the North China Plain (NCP), China is essential in light of current irrigation water shortages. In this study, the AquaCrop model was used to calibrate, and validate winter wheat crop performance under various planting dates and irrigation application rates. All experiments were conducted at the Xiaotangshan experimental site in Beijing, China, during seasons of 2008/2009, 2009/2010, 2010/2011 and 2011/2012. This model was first calibrated using data from 2008/2009 and 2009/2010, and subsequently validated using data from 2010/2011 and 2011/2012. The results showed that the simulated canopy cover (CC), biomass yield (BY) and grain yield (GY) were consistent with the measured CC, BY and GY, with corresponding coefficients of determination (R(2)) of 0.93, 0.91 and 0.93, respectively. In addition, relationships between BY, GY and transpiration (T), (R(2) = 0.57 and 0.71, respectively) was observed. These results suggest that frequent irrigation with a small amount of water significantly improved BY and GY. Collectively, these results indicate that the AquaCrop model can be used in the evaluation of various winter wheat irrigation strategies. The AquaCrop model predicted winter wheat CC, BY and GY with acceptable accuracy. Therefore, we concluded that AquaCrop is a useful decision-making tool for use in efforts to optimize wheat winter planting dates, and irrigation strategies.
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Claims 8
Claim · model-written summary
AquaCrop simulated wheat canopy cover consistently with measurements at R² 0.93.
- Taxon
- Winter Wheat
Triticum aestivumt0 - Outcome
- canopy cover (CC)e0
- Value
- 0.93e0
- Comparator
- measured CCe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“simulated canopy cover (CC), biomass yield (BY) and grain yield (GY) were consistent with the measured CC, BY and GY, with corresponding coefficients of determination (R(2)) of 0.93, 0.91 and 0.93, respectively”
t0“Winter Wheat”
Claim · model-written summary
AquaCrop simulated biomass yield consistently with measurements at R² 0.91.
- Taxon
- Winter WheatTriticum aestivumt0
- Outcome
- biomass yield (BY)e0
- Value
- 0.91e0
- Comparator
- measured CC, BY and GYe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“simulated canopy cover (CC), biomass yield (BY) and grain yield (GY) were consistent with the measured CC, BY and GY, with corresponding coefficients of determination (R(2)) of 0.93, 0.91 and 0.93, respectively”
t0“Winter Wheat”
Claim · model-written summary
AquaCrop simulated grain yield consistently with measurements at R² 0.93.
- Taxon
- Winter WheatTriticum aestivumt0
- Outcome
- grain yield (GY)e0
- Value
- 0.93e0
- Comparator
- measured CC, BY and GYe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“simulated canopy cover (CC), biomass yield (BY) and grain yield (GY) were consistent with the measured CC, BY and GY, with corresponding coefficients of determination (R(2)) of 0.93, 0.91 and 0.93, respectively”
t0“Winter Wheat”
Claim · model-written summary
Biomass yield was related to transpiration with R² 0.57.
- Taxon
- Winter WheatTriticum aestivumt0
- Outcome
- BYe0
- Value
- 0.57e0
- Comparator
- transpiration (T)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relationships between BY, GY and transpiration (T), (R(2) = 0.57 and 0.71, respectively) was observed”
t0“Winter Wheat”
Claim · model-written summary
Grain yield was related to transpiration with R² 0.71.
- Taxon
- Winter WheatTriticum aestivumt0
- Outcome
- GYe0
- Value
- 0.71e0
- Comparator
- transpiration (T)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relationships between BY, GY and transpiration (T), (R(2) = 0.57 and 0.71, respectively) was observed”
t0“Winter Wheat”
Claim · model-written summary
Frequent small irrigations significantly improved biomass yield.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- frequent irrigation with a small amount of watere0
- Outcome
- BYe0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“frequent irrigation with a small amount of water significantly improved BY and GY”
t0“Winter Wheat”
Claim · model-written summary
Frequent small irrigations significantly improved grain yield.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- frequent irrigation with a small amount of watere0
- Outcome
- GYe0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“frequent irrigation with a small amount of water significantly improved BY and GY”
t0“Winter Wheat”
Claim · model-written summary
The authors regard AquaCrop as useful for optimizing wheat planting dates and irrigation.
- Taxon
- wheatTriticum aestivume0
- Outcome
- optimize wheat winter planting dates, and irrigation strategiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AquaCrop is a useful decision-making tool for use in efforts to optimize wheat winter planting dates, and irrigation strategies”
The same questions in other papers
irrigation · yield · Triticum aestivum (wheat)Positive and negative results
797 papers in the same direction as this paper · 184 in the opposite direction · 7 reporting no difference from an alternative
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