Abstract
In a field experiment, flue-cured tobacco (Nicotiana tabacum) cultivar K 326 was selected to study the effects of different nitrogen application rates on the growth and the accumulation of nitrogen and nicotine in flue-cured tobacco. The results showed that the dry weight or nitrogen accumulation and nicotine accumulation of each leaf position and of the whole plant had an increasing trend as nitrogen application increased within certain ranges in Jinsha, and they remained basically unchanged when the nitrogen rate surpassed 97.5 kg/hm2. The effects of nitrogen application for increasing dry weight and nitrogen and nicotine accumulation of upper leaves mainly occurred at later growth stages of tobacco plants but those of middle and lower leaves occurred at earlier stages. Compared with the no-N control, nitrogen application treatments advanced the arrival of the highest rates of accumulation in dry weight and nitrogen accumulation and nicotine accumulation of the whole plant, and all the three increased with N rates. The highest rate of nitrogen accumulation of the whole plant occurred before that of nicotine accumulation and dry weight of the whole plant, which occurred after the removing the apex.
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Claims 12
Claim · model-written summary
Dry weight rose with nitrogen rate within a range, then plateaued above 97.5 kg/hm2.
Verbatim
e0“the dry weight or nitrogen accumulation and nicotine accumulation of each leaf position and of the whole plant had an increasing trend as nitrogen application increased within certain ranges in Jinsha, and they remained basically unchanged when the nitrogen rate surpassed 97.5 kg/hm2”
e1“flue-cured tobacco (Nicotiana tabacum) cultivar K 326”
Claim · model-written summary
Nitrogen accumulation rose with nitrogen rate within a range, then plateaued above 97.5 kg/hm2.
Verbatim
e0“the dry weight or nitrogen accumulation and nicotine accumulation of each leaf position and of the whole plant had an increasing trend as nitrogen application increased within certain ranges in Jinsha, and they remained basically unchanged when the nitrogen rate surpassed 97.5 kg/hm2”
e1“flue-cured tobacco (Nicotiana tabacum) cultivar K 326”
Claim · model-written summary
Nicotine accumulation rose with nitrogen rate within a range, then plateaued above 97.5 kg/hm2.
Verbatim
e0“the dry weight or nitrogen accumulation and nicotine accumulation of each leaf position and of the whole plant had an increasing trend as nitrogen application increased within certain ranges in Jinsha, and they remained basically unchanged when the nitrogen rate surpassed 97.5 kg/hm2”
e1“flue-cured tobacco (Nicotiana tabacum) cultivar K 326”
Claim · model-written summary
Nitrogen effects on upper leaf dry weight and nitrogen and nicotine accumulation mainly occurred late in growth.
- Taxon
- tobacco
Nicotiana tabacume0 - Organ / stage
- upper leavese0
- Treatment
- nitrogen applicatione0
- Outcome
- dry weight and nitrogen and nicotine accumulatione0
- Qualifier
- later growth stagese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of nitrogen application for increasing dry weight and nitrogen and nicotine accumulation of upper leaves mainly occurred at later growth stages of tobacco plants”
Claim · model-written summary
Nitrogen effects on middle and lower leaves mainly occurred early in growth.
- Taxon
- tobaccoNicotiana tabacume1
- Organ / stage
- middle and lower leavese0
- Treatment
- nitrogen applicatione2
- Outcome
- dry weight and nitrogen and nicotine accumulatione2
- Qualifier
- earlier stagese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“those of middle and lower leaves occurred at earlier stages”
e1“growth stages of tobacco plants”
e2“The effects of nitrogen application for increasing dry weight and nitrogen and nicotine accumulation”
Claim · model-written summary
Nitrogen application advanced peak dry weight accumulation rate relative to no-N control.
Verbatim
e0“Compared with the no-N control, nitrogen application treatments advanced the arrival of the highest rates of accumulation in dry weight and nitrogen accumulation and nicotine accumulation of the whole plant”
e1“growth and the accumulation of nitrogen and nicotine in flue-cured tobacco”
Claim · model-written summary
Nitrogen application advanced peak nitrogen accumulation rate relative to no-N control.
Verbatim
e0“Compared with the no-N control, nitrogen application treatments advanced the arrival of the highest rates of accumulation in dry weight and nitrogen accumulation and nicotine accumulation of the whole plant”
e1“growth and the accumulation of nitrogen and nicotine in flue-cured tobacco”
Claim · model-written summary
Nitrogen application advanced peak nicotine accumulation rate relative to no-N control.
Verbatim
e0“Compared with the no-N control, nitrogen application treatments advanced the arrival of the highest rates of accumulation in dry weight and nitrogen accumulation and nicotine accumulation of the whole plant”
e1“growth and the accumulation of nitrogen and nicotine in flue-cured tobacco”
Claim · model-written summary
Peak dry weight accumulation rate increased with nitrogen rate.
Verbatim
e0“and all the three increased with N rates”
e1“highest rates of accumulation in dry weight and nitrogen accumulation and nicotine accumulation of the whole plant”
e2“growth and the accumulation of nitrogen and nicotine in flue-cured tobacco”
Claim · model-written summary
Peak nitrogen accumulation rate increased with nitrogen rate.
Verbatim
e0“and all the three increased with N rates”
e1“highest rates of accumulation in dry weight and nitrogen accumulation and nicotine accumulation of the whole plant”
e2“growth and the accumulation of nitrogen and nicotine in flue-cured tobacco”
Claim · model-written summary
Peak nicotine accumulation rate increased with nitrogen rate.
Verbatim
e0“and all the three increased with N rates”
e1“highest rates of accumulation in dry weight and nitrogen accumulation and nicotine accumulation of the whole plant”
e2“growth and the accumulation of nitrogen and nicotine in flue-cured tobacco”
Claim · model-written summary
Peak nitrogen accumulation occurred before nicotine and dry weight accumulation peaks, which followed apex removal.
Verbatim
e0“The highest rate of nitrogen accumulation of the whole plant occurred before that of nicotine accumulation and dry weight of the whole plant, which occurred after the removing the apex.”
e1“growth and the accumulation of nitrogen and nicotine in flue-cured tobacco”
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See all 73 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.