Abstract
Abstract In order to explore the effects of biochar on root system and growth characteristics of flue-tobacco, three years of field experiments were conducted to study the influence of different biochar application levels [600 (T 1 ), 1200 (T 2 ), 1800(T 3 ), 2400 (T 4 ), 3000 (T 5 ) kg/ha] and no fertilizer (CK) on the root physiological indexes and growth index of tobacco. Compared with local conventional fertilization, the application rate of N fertilizer in each treatment (except for control) was reduced by 40% to analyze the effects of different amount of biochar on the physiological indexes of tobacco roots and leaf photosynthesis during flourishing. The results showed that tobacco plants' root development status in the flourishing period was consistent with the photosynthetic physiological indexes, chlorophyll content, and leaf-area coefficient. Compared with the control, the application of biochar could increase the root vigor by 177.8%. Biochar improved the roots, increasing the total root area by 91.35% and the number of root tips by 100.9%. Meanwhile, biochar increased the net photosynthetic rate of tobacco leaves by 77.3% and the total tobacco biomass by 72.5%. Studies have shown that biochar can promote the development of tobacco roots, and then enhance the photosynthesis of leaves, so that tobacco plants can grow healthily, which is conducive to the tobacco production and the cultivation of soil.
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Claims 7
Claim · model-written summary
Root development tracked photosynthetic indexes, chlorophyll and leaf area.
- Taxon
- tobacco
Nicotiana tabacume0 - Organ / stage
- flourishing periode0
- Outcome
- root development statuse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tobacco plants' root development status in the flourishing period was consistent with the photosynthetic physiological indexes, chlorophyll content, and leaf-area coefficient”
Claim · model-written summary
Biochar increased root vigor by 177.8% over control.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- biochare0
- Outcome
- root vigore0
- Direction
- increasee0
- Value
- 177.8%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the control, the application of biochar could increase the root vigor by 177.8%.”
t0“tobacco”
Claim · model-written summary
Biochar increased total root area by 91.35%.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- Biochare0
- Outcome
- total root areae0
- Direction
- increasinge0
- Value
- 91.35%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biochar improved the roots, increasing the total root area by 91.35%”
t0“tobacco”
Claim · model-written summary
Biochar increased root tips by 100.9%.
- Taxon
- tobaccoNicotiana tabacumt0
- Outcome
- number of root tipse0
- Value
- 100.9%e0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the number of root tips by 100.9%”
t0“tobacco”
Claim · model-written summary
Biochar increased net leaf photosynthesis by 77.3%.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- biochare0
- Outcome
- net photosynthetic ratee0
- Direction
- increasede0
- Value
- 77.3%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biochar increased the net photosynthetic rate of tobacco leaves by 77.3%”
Claim · model-written summary
Biochar increased tobacco biomass by 72.5%.
- Taxon
- tobaccoNicotiana tabacume0
- Outcome
- total tobacco biomasse0
- Value
- 72.5%e0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the total tobacco biomass by 72.5%”
Claim · model-written summary
Authors infer biochar promotes roots and subsequently leaf photosynthesis and plant growth.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- biochare0
- Outcome
- photosynthesis of leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biochar can promote the development of tobacco roots, and then enhance the photosynthesis of leaves, so that tobacco plants can grow healthily”
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See all 15 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.