Claim · model-written summary
Nitrogen rates of 200 to 250 kg ha−1 commonly produced higher rice grain yield than lower or higher rates in most regions.
- Taxon
- rice
Oryza sativae0t0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N rates of 200 to 250 kg ha−1 commonly achieved higher rice grain yield compared to less than 200 kg N ha−1 and more than 250 kg N ha−1 at most rice planting regions.”
t0“Review grain yield and nitrogen use efficiency in rice production regions in China”
Title
Review grain yield and nitrogen use efficiency in rice production regions in China
Sheng-guo CHE; Bing-qiang ZHAO; Yan-ting LI; et al. Journal of Integrative Agriculture 2015. doi:10.1016/s2095-3119(15)61228-x
Other claims from this paper (17)
- Observation Rice grain yield averaged 7.69 t ha−1.
- Observation Rice plant N accumulation averaged 152 kg ha−1.
- Observation Rice N harvest index (HIN) averaged 0.64 kg kg−1.
- Observation Rice indigenous N supply (INS) averaged 94.1 kg kg−1.
- Observation Rice internal N efficiency (IEN) averaged 53.9 kg kg−1.
- Observation Rice reciprocal internal N efficiency (RIEN) averaged 1.98 kg kg−1.
- Observation Rice agronomic N use efficiency (AEN) averaged 12.6 kg kg−1.
- Observation Rice partial N factor productivity (PEPN) averaged 48.6 kg kg−1.
- Observation Rice physiological N efficiency (PEN) averaged 33.8 kg kg−1.
- Observation Rice recover efficiency of applied N (REN) averaged 39.3%.
- Association Rice production regions and nitrogen rates significantly influenced grain yield, nitrogen uptake and nitrogen use efficiency.
- Association At 200 to 250 kg ha−1 N, rice grain yield was positively related to AEN, explaining 46.49 of its variation.
- Association At 200 to 250 kg ha−1 N, rice grain yield was positively related to PEN, explaining 24.64 of its variation.
- Association At 200 to 250 kg ha−1 N, rice grain yield was positively related to REN, explaining 7.94 of its variation.
- Association At 200 to 250 kg ha−1 N, rice grain yield was positively related to IEN, explaining 17.84 of its variation.
- Association At 200 to 250 kg ha−1 N, rice grain yield was positively related to PFPN, explaining 88.24% of its variation.
- Association Within a reasonable nitrogen application range, increased grain yield can accompany acceptable nitrogen use efficiency.