Claim · model-written summary
Irrigation and nitrogen replacement increased wheat leaf area index by 26.5–47.0% compared with no nitrogen.
- Taxon
- winter wheat
Triticum aestivumt0 - Treatment
- irrigation and nitrogen reduction replacemente0
- Outcome
- leaf area indexe0
- Direction
- increasede0
- Value
- 26.5–47.0%e0
- Comparator
- no-nitrogen treatmente0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the no-nitrogen treatment, irrigation and nitrogen reduction replacement increased the leaf area index and chlorophyll content by 26.5–47.0% and 17.7–31.5%, respectively”
t0“winter wheat”
Title
Hongzheng Shen; Yunhe Gao; Kexin Sun; et al. Agricultural Water Management 2023. doi:10.1016/j.agwat.2023.108289
Other claims from this paper (13)
- Intervention effect Irrigation at 90 mm per time reduced water productivity.
- Intervention effect Irrigation at 90 mm per time increased soil water storage and evapotranspiration.
- Intervention effect Irrigation and nitrogen replacement increased chlorophyll content by 17.7–31.5% compared with no nitrogen.
- Intervention effect The 75% traditional nitrogen rate raised average wheat yield by 68.2%.
- Intervention effect The traditional nitrogen rate raised average wheat yield by 85.1%.
- Intervention effect Polymer-coated urea raised average wheat yield by 81.9%.
- Intervention effect Urea plus organic fertilizer raised average wheat yield by 95.1%.
- Observation Average wheat grain nitrogen uptake rose by 90.0%, 117.5%, 111.9% and 147.2% under the four listed nitrogen treatments, respectively.
- Observation Residual soil nitrate decreased by 42.0%, 25.4% and 9.7% under 75% U, PCU and U+OM relative to U.
- Observation Average wheat nitrogen use efficiency increased by 4.7–30.5% after two years.
- Association Wheat yield correlated significantly with physiological growth indices other than evapotranspiration and thousand-grain weight, water productivity and nitrogen use efficiency.
- Intervention effect Large irrigation amounts did not significantly increase wheat yield, water productivity or nitrogen use efficiency.
- Recommendation The authors recommend 60 mm irrigation with PCU or urea plus organic fertilizer for sustainable wheat production with high water productivity and nitrogen use efficiency.