Abstract
Nitrogen is the primary limiting factor for crop yield formation. However, excessive application of nitrogen fertilizer not only leads to a decrease in nitrogen utilization efficiency, but also causes serious environmental problems. Therefore, how to balance environmental protection and crop yield when applying nitrogen fertilizer is an important challenge currently faced in agricultural production. Biochar, as a soil amendment, has been widely used in agricultural production. This study used ‘Longyan 101’ tobacco as the experimental material and explored the effects of nitrogen reduction treatment (reducing conventional nitrogen application by half) and combined application of biochar (20 kg/hm2) on tobacco photosynthesis under field experimental conditions. Transcriptome sequencing technology was used to study the changes in the expression levels of photosynthesis-related genes. The results indicate that: reducing the application of nitrogen fertilizer reduces the photosynthetic capacity of tobacco and inhibits its growth, while applying biochar can to some extent alleviate the adverse effects of insufficient nitrogen fertilizer. The results of this experiment have laid the foundation for the rational application of nitrogen fertilizer and the green development of tobacco agriculture.
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Claims 3
Claim · model-written summary
Halving conventional nitrogen application reduced the photosynthetic capacity of tobacco.
- Taxon
- tobacco
Nicotiana tabacume3 - Material
- Longyan 101e0
- Treatment
- reducing the application of nitrogen fertilizere3
- Outcome
- photosynthetic capacitye3
- Direction
- reducese3
- Comparator
- conventional nitrogen applicatione1
- Setting
- field experimental conditionse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“used ‘Longyan 101’ tobacco as the experimental material”
e1“reducing conventional nitrogen application by half”
e2“under field experimental conditions”
e3“reducing the application of nitrogen fertilizer reduces the photosynthetic capacity of tobacco and inhibits its growth”
Claim · model-written summary
Halving conventional nitrogen application inhibited the growth of tobacco.
- Taxon
- tobaccoNicotiana tabacume3
- Material
- Longyan 101e0
- Treatment
- reducing the application of nitrogen fertilizere3
- Outcome
- growthe3
- Direction
- inhibitse3
- Comparator
- conventional nitrogen applicatione1
- Setting
- field experimental conditionse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“used ‘Longyan 101’ tobacco as the experimental material”
e1“reducing conventional nitrogen application by half”
e2“under field experimental conditions”
e3“reducing the application of nitrogen fertilizer reduces the photosynthetic capacity of tobacco and inhibits its growth”
Claim · model-written summary
Biochar application alleviated the adverse effects of insufficient nitrogen fertilizer on tobacco to some extent.
- Taxon
- tobaccoNicotiana tabacume3
- Treatment
- biochare4
- Outcome
- adverse effectse4
- Direction
- alleviatee4
- Qualifier
- to some extente4
- Comparator
- insufficient nitrogen fertilizere4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“reducing the application of nitrogen fertilizer reduces the photosynthetic capacity of tobacco and inhibits its growth”
e4“applying biochar can to some extent alleviate the adverse effects of insufficient nitrogen fertilizer”
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See all 182 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.