Abstract
Flue-cured tobacco(FCT) is a nitrogen-sensitive plant with strict requirements for nitrogen(N).Reasonable application of N fertilizer not only favors N absorption and utilization as nutrient,but also improves tobacco leaf quality.A field experiment was carried out to determine the effects of basal N fertilization time(0 d,15 d and 30 d before tobacco seedling transplant) on N use parameters by FCT plant in the main tobacco production area of Hubei Province.The results showed that dry matter accumulation(DMA) and N content in tobacco leaf and stem increased with earlier basal fertilization time.For basal fertilizer application times of 15 d and 30 d before seedling transplant,DMA/N content respectively increased by 16.4%/1.5% and 22.6%/8.7% in tobacco leaf and by 2.5%/13.4% and 12.7%/33.9% in tobacco stem.Basal fertilizer application time did not significantly(P 0.05) influence N recovery efficiency.However,it significantly(P 0.05) decreased agronomic N use efficiency by 35.2% and 37.4% and physiological N use efficiency by 35.4% and 41.6% respectively for basal fertilizer application times of 15 d and 30 d before seedling transplant.Furthermore,basal fertilization time was negatively correlated with agronomic N use efficiency,physiological N use efficiency and partial factor productivity of applied N.However,agronomic N use efficiency was positively correlated with physiological N use efficiency and partial factor productivity of applied N.Also physiological N use efficiency was positively correlated with partial factor productivity of applied N.In terms of N absorption and utilization and dry matter accumulation in tobacco leaf,it was advantageous to apply basal N fertilizer 15 d and 30 d before tobacco seedling transplant.
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Claims 18
Claim · model-written summary
Dry matter accumulation and N content in tobacco leaf and stem increased with earlier basal fertilization time.
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e2“dry matter accumulation(DMA) and N content in tobacco leaf and stem increased with earlier basal fertilization time”
Claim · model-written summary
DMA in tobacco leaf increased by 16.4% with basal fertilizer application 15 d before seedling transplant.
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e3“For basal fertilizer application times of 15 d and 30 d before seedling transplant,DMA/N content respectively increased by 16.4%/1.5% and 22.6%/8.7% in tobacco leaf and by 2.5%/13.4% and 12.7%/33.9% in tobacco stem”
Claim · model-written summary
N content in tobacco leaf increased by 1.5% with basal fertilizer application 15 d before seedling transplant.
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e3“For basal fertilizer application times of 15 d and 30 d before seedling transplant,DMA/N content respectively increased by 16.4%/1.5% and 22.6%/8.7% in tobacco leaf and by 2.5%/13.4% and 12.7%/33.9% in tobacco stem”
Claim · model-written summary
DMA in tobacco leaf increased by 22.6% with basal fertilizer application 30 d before seedling transplant.
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e3“For basal fertilizer application times of 15 d and 30 d before seedling transplant,DMA/N content respectively increased by 16.4%/1.5% and 22.6%/8.7% in tobacco leaf and by 2.5%/13.4% and 12.7%/33.9% in tobacco stem”
Claim · model-written summary
N content in tobacco leaf increased by 8.7% with basal fertilizer application 30 d before seedling transplant.
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e3“For basal fertilizer application times of 15 d and 30 d before seedling transplant,DMA/N content respectively increased by 16.4%/1.5% and 22.6%/8.7% in tobacco leaf and by 2.5%/13.4% and 12.7%/33.9% in tobacco stem”
Claim · model-written summary
DMA in tobacco stem increased by 2.5% with basal fertilizer application 15 d before seedling transplant.
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e3“For basal fertilizer application times of 15 d and 30 d before seedling transplant,DMA/N content respectively increased by 16.4%/1.5% and 22.6%/8.7% in tobacco leaf and by 2.5%/13.4% and 12.7%/33.9% in tobacco stem”
Claim · model-written summary
N content in tobacco stem increased by 13.4% with basal fertilizer application 15 d before seedling transplant.
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e3“For basal fertilizer application times of 15 d and 30 d before seedling transplant,DMA/N content respectively increased by 16.4%/1.5% and 22.6%/8.7% in tobacco leaf and by 2.5%/13.4% and 12.7%/33.9% in tobacco stem”
Claim · model-written summary
DMA in tobacco stem increased by 12.7% with basal fertilizer application 30 d before seedling transplant.
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e3“For basal fertilizer application times of 15 d and 30 d before seedling transplant,DMA/N content respectively increased by 16.4%/1.5% and 22.6%/8.7% in tobacco leaf and by 2.5%/13.4% and 12.7%/33.9% in tobacco stem”
Claim · model-written summary
N content in tobacco stem increased by 33.9% with basal fertilizer application 30 d before seedling transplant.
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e3“For basal fertilizer application times of 15 d and 30 d before seedling transplant,DMA/N content respectively increased by 16.4%/1.5% and 22.6%/8.7% in tobacco leaf and by 2.5%/13.4% and 12.7%/33.9% in tobacco stem”
Claim · model-written summary
Basal fertilizer application time did not significantly influence N recovery efficiency in flue-cured tobacco.
- Taxon
- Flue-cured tobaccoe0
- Treatment
- Basal fertilizer application timee4
- Outcome
- N recovery efficiencye4
- Direction
- no_changeinferrede4
Not reportedComparator
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e4“Basal fertilizer application time did not significantly(P 0.05) influence N recovery efficiency”
Claim · model-written summary
Basal fertilizer application 15 d before transplant significantly decreased agronomic N use efficiency by 35.2%.
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e5“significantly(P 0.05) decreased agronomic N use efficiency by 35.2% and 37.4% and physiological N use efficiency by 35.4% and 41.6% respectively for basal fertilizer application times of 15 d and 30 d before seedling transplant”
Claim · model-written summary
Basal fertilizer application 30 d before transplant significantly decreased agronomic N use efficiency by 37.4%.
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e5“significantly(P 0.05) decreased agronomic N use efficiency by 35.2% and 37.4% and physiological N use efficiency by 35.4% and 41.6% respectively for basal fertilizer application times of 15 d and 30 d before seedling transplant”
Claim · model-written summary
Basal fertilizer application 15 d before transplant significantly decreased physiological N use efficiency by 35.4%.
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e5“significantly(P 0.05) decreased agronomic N use efficiency by 35.2% and 37.4% and physiological N use efficiency by 35.4% and 41.6% respectively for basal fertilizer application times of 15 d and 30 d before seedling transplant”
Claim · model-written summary
Basal fertilizer application 30 d before transplant significantly decreased physiological N use efficiency by 41.6%.
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e5“significantly(P 0.05) decreased agronomic N use efficiency by 35.2% and 37.4% and physiological N use efficiency by 35.4% and 41.6% respectively for basal fertilizer application times of 15 d and 30 d before seedling transplant”
Claim · model-written summary
Basal fertilization time was negatively correlated with agronomic N use efficiency, physiological N use efficiency and partial factor productivity of applied N.
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e6“basal fertilization time was negatively correlated with agronomic N use efficiency,physiological N use efficiency and partial factor productivity of applied N”
Claim · model-written summary
Agronomic N use efficiency was positively correlated with physiological N use efficiency and partial factor productivity of applied N.
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e7“agronomic N use efficiency was positively correlated with physiological N use efficiency and partial factor productivity of applied N”
Claim · model-written summary
Physiological N use efficiency was positively correlated with partial factor productivity of applied N.
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e7“agronomic N use efficiency was positively correlated with physiological N use efficiency and partial factor productivity of applied N”
Claim · model-written summary
Applying basal N fertilizer 15 d and 30 d before tobacco seedling transplant was advantageous for N absorption and utilization and dry matter accumulation in tobacco leaf.
- Taxon
- tobacco
Nicotiana tabacume1 - Treatment
- basal N fertilizer 15 d and 30 d before tobacco seedling transplante1
- Outcome
- N absorption and utilizatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flue-cured tobacco(FCT) is a nitrogen-sensitive plant”
e1“In terms of N absorption and utilization and dry matter accumulation in tobacco leaf,it was advantageous to apply basal N fertilizer 15 d and 30 d before tobacco seedling transplant”
The same questions in other papers
fertilization · nutrient: efficiency · Nicotiana tabacum (tobacco)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
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- positive
- negative
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