Claim · model-written summary
Aboveground rice nitrogen uptake with humic acid urea was 242.1 kg N·hm-2.
- Taxon
- rice
Oryza sativat0 - Treatment
- humic acid ureae0
- Outcome
- Total N uptake ratese1
- Value
- 242.1 kg N·hm-2e0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“humic acid urea(242.1 kg N·hm-2)”
t0“rice”
e1“Total N uptake rates by rice aboveground followed the order: seaweed urea(253.5 kg N·hm-2)”
Title
Chunyan Wu Acta Agriculturae Zhejiangensis 2013
Other claims from this paper (19)
- Intervention effect Rice grain yield increased with nitrogen rate under common urea.
- Intervention effect Rice grain yield increased with nitrogen rate under seaweed urea.
- Intervention effect Humic acid urea gave its highest rice yield at 180 kg N·hm-2.
- Intervention effect Amino acid urea gave its highest rice yield at 180 kg N·hm-2.
- Observation Aboveground rice nitrogen uptake with seaweed urea was 253.5 kg N·hm-2.
- Observation Aboveground rice nitrogen uptake with common urea was 236.8 kg N·hm-2.
- Observation Aboveground rice nitrogen uptake with amino acid urea was 230.8 kg N·hm-2.
- Association Total nitrogen uptake increased with nitrogen rate.
- Association Nitrogen demand per 100 kg rice grain increased with nitrogen rate.
- Association Dry matter production efficiency decreased with nitrogen rate.
- Association Rice grain production efficiency decreased with nitrogen rate.
- Association Nitrogen harvest index decreased with nitrogen rate.
- Association Nitrogen use efficiency decreased with nitrogen rate.
- Association Internal nitrogen use efficiency decreased with nitrogen rate.
- Association Rice grain yield correlated with nitrogen demand per 100 kg grain and dry matter production efficiency.
- Association Rice grain yield correlated with grain production efficiency and nitrogen use efficiency.
- Association Rice grain yield correlated with internal nitrogen harvest index.
- Recommendation The authors recommend 180 kg N·hm-2 for three novel synergistic urea fertilizers.
- Intervention effect At 180 kg N·hm-2, novel synergistic urea gave a greater yield increase than common urea.