Claim · model-written summary
Nitrogen use efficiency was higher at low than at high nitrogen level.
- Taxon
- rice
Oryza sativat0 - Treatment
- low nitrogen levele6
- Outcome
- nitrogen use efficiencye5
- Direction
- highere6
- Comparator
- high nitrogen levele6
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lowland Rice Field”
e5“the nitrogen use efficiency under alternative wetting and drying irrigation was higher than that under continuous flooding irrigation by the two methods”
e6“that of low nitrogen level was higher than high nitrogen level”
Title
Effects of Water and Fertilizer on Nitrogen Use Effeciency and Balance in Lowland Rice Field
Pingcang Zhang Journal of Irrigation and Drainage 2009
Other claims from this paper (9)
- Observation About half of the total nitrogen in rice plants accumulated in the grain.
- Intervention effect Nitrogen accumulation differed between water saving and traditional flooding irrigation on stem, green leaves and grain.
- Intervention effect No significant difference in nitrogen accumulation between water saving and flooding irrigation on yellow leaves and unfilled grain.
- Method / resource The minus method gave higher nitrogen use efficiency in rice than the isotope tracer technique.
- Intervention effect Nitrogen use efficiency was higher under alternate wetting and drying irrigation than under continuous flooding irrigation.
- Observation Isotope tracer balance attributes 37.4% to 51.7% of nitrogen in lowland rice to NH3 volatilisation.
- Observation Isotope tracer balance attributes 20.4% to 37.7% of nitrogen in lowland rice to soil residue.
- Observation Isotope tracer balance attributes 9.2% to 36.4% of nitrogen in lowland rice to crop utilisation.
- Observation Isotope tracer balance attributes 0.3% to 16.4% of nitrogen in lowland rice to leaching.