Abstract
The transformation and supply levels of nitrogen in tobacco-growing soil at different growth and development stage of flue-cured tobacco and its effects on the nicotine contents of upper leaves were studied. The results showed that the inorganic nitrogen content in soil layer depth of 0-20cm raised sharply but only for a short time by inorganic nitrogen fertilizer application; the inorganic nitrogen content in the layer depth of 20-40cm was affected slightly by nitrogen application; oversupply of nitrogen at latter growing stage led to excessive nicotine content in (upper) leaves.
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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 3
Claim · model-written summary
Inorganic nitrogen fertilizer sharply but briefly raised nitrogen in the 0-20cm soil layer.
- Taxon
- Tobacco
Nicotiana tabacumt0 - Treatment
- inorganic nitrogen fertilizer applicatione1
- Outcome
- inorganic nitrogen content in soil layer depth of 0-20cme1
- Direction
- raisede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the inorganic nitrogen content in soil layer depth of 0-20cm raised sharply but only for a short time by inorganic nitrogen fertilizer application”
t0“Flue-cured Tobacco”
Claim · model-written summary
Nitrogen application affected nitrogen in the 20-40cm soil layer only slightly.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- nitrogen applicatione1
- Outcome
- inorganic nitrogen content in the layer depth of 20-40cme1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the inorganic nitrogen content in the layer depth of 20-40cm was affected slightly by nitrogen application”
t0“Flue-cured Tobacco”
Claim · model-written summary
Excess nitrogen late in growth led to excessive nicotine in upper tobacco leaves.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- oversupply of nitrogen at latter growing stagee1
- Outcome
- nicotine content in (upper) leavese1
- Direction
- excessivee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“oversupply of nitrogen at latter growing stage led to excessive nicotine content in (upper) leaves.”
t0“Flue-cured Tobacco”
The same questions in other papers
nitrogen · molecular: metabolites · Nicotiana tabacum (tobacco)Positive and negative results
9 papers in the same direction as this paper · 35 in the opposite direction
- positive
- positive
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See all 45 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.