Abstract
Abstract To study the impact of different water‐nitrogen regulation modes on the carbon cycle of greenhouse tomatoes and determine optimal irrigation and nitrogen application levels to enhance carbon absorption and minimize greenhouse gas emissions. This study employed three irrigation levels (100%, 80%, and 60% of ET0) and three nitrogen application levels (240, 192, and 144 kg·ha −1 ), along with a control group (W1N1, i.e., 100% ET0‐240 kg·ha −1 ). Gas‐chromatography methods were used to monitor CH 4 and soil CO 2 emissions, while assessing dry matter, carbon content, and carbon fixation capacity of tomato organs throughout the growth period. Additionally, a system for evaluating the net ecosystem carbon budget of facility tomatoes was developed based on net primary productivity. Results indicated reduced CH 4 and soil CO 2 emissions with decreased irrigation and nitrogen application. Dry matter, carbon content, and carbon fixation of tomato organs initially increased with reduced nitrogen and irrigation but then declined. The W2N2 (80% ET0‐192 kg·ha −1 ) treatment showed maximal values for dry matter, carbon content, carbon fixation, net primary productivity (NPP), and gross primary productivity (GPP). Findings suggest a positive net ecosystem carbon budget under reduced water and nitrogen conditions, indicating carbon absorption. Specifically, the W2N2 treatment outperformed others in net carbon absorption, highlighting its potential as an effective mode for enhancing carbon sequestration in the region.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
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 10
Claim · model-written summary
CH 4 emissions fell as irrigation and nitrogen application decreased.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- decreased irrigation and nitrogen applicatione0
- Outcome
- CH 4e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results indicated reduced CH 4 and soil CO 2 emissions with decreased irrigation and nitrogen application.”
t0“greenhouse tomato cultivation”
Claim · model-written summary
Soil CO 2 emissions fell as irrigation and nitrogen application decreased.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- decreased irrigation and nitrogen applicatione0
- Outcome
- soil CO 2 emissionse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results indicated reduced CH 4 and soil CO 2 emissions with decreased irrigation and nitrogen application.”
t0“greenhouse tomato cultivation”
Claim · model-written summary
Tomato organ dry matter first increased and then declined as water and nitrogen were reduced.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- tomato organse0
- Treatment
- reduced nitrogen and irrigatione0
- Outcome
- Dry mattere0
- Direction
- initially increased with reduced nitrogen and irrigation but then declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry matter, carbon content, and carbon fixation of tomato organs initially increased with reduced nitrogen and irrigation but then declined.”
Claim · model-written summary
Tomato organ carbon content first increased and then declined as water and nitrogen were reduced.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- tomato organse0
- Treatment
- reduced nitrogen and irrigatione0
- Outcome
- carbon contente0
- Direction
- initially increased with reduced nitrogen and irrigation but then declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry matter, carbon content, and carbon fixation of tomato organs initially increased with reduced nitrogen and irrigation but then declined.”
Claim · model-written summary
Tomato organ carbon fixation first increased and then declined as water and nitrogen were reduced.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- tomato organse0
- Treatment
- reduced nitrogen and irrigatione0
- Outcome
- carbon fixatione0
- Direction
- initially increased with reduced nitrogen and irrigation but then declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry matter, carbon content, and carbon fixation of tomato organs initially increased with reduced nitrogen and irrigation but then declined.”
Claim · model-written summary
W2N2 produced maximal tomato dry matter, carbon content, and carbon fixation.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- W2N2 (80% ET0‐192 kg·ha −1 )e0
- Outcome
- dry matter, carbon content, carbon fixatione0
- Direction
- maximale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The W2N2 (80% ET0‐192 kg·ha −1 ) treatment showed maximal values for dry matter, carbon content, carbon fixation, net primary productivity (NPP), and gross primary productivity (GPP).”
e1“carbon fixation of tomato organs initially increased”
Claim · model-written summary
W2N2 produced maximal net primary productivity.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- W2N2 (80% ET0‐192 kg·ha −1 )e0
- Outcome
- net primary productivity (NPP)e0
- Direction
- maximale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The W2N2 (80% ET0‐192 kg·ha −1 ) treatment showed maximal values for dry matter, carbon content, carbon fixation, net primary productivity (NPP), and gross primary productivity (GPP).”
e1“carbon fixation of tomato organs initially increased”
Claim · model-written summary
W2N2 produced maximal gross primary productivity.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- W2N2 (80% ET0‐192 kg·ha −1 )e0
- Outcome
- gross primary productivity (GPP)e0
- Direction
- maximale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The W2N2 (80% ET0‐192 kg·ha −1 ) treatment showed maximal values for dry matter, carbon content, carbon fixation, net primary productivity (NPP), and gross primary productivity (GPP).”
e1“carbon fixation of tomato organs initially increased”
Claim · model-written summary
Reduced water and nitrogen were associated with a positive net ecosystem carbon budget.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- reduced water and nitrogen conditionse0
- Outcome
- net ecosystem carbon budgete0
- Direction
- positivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Findings suggest a positive net ecosystem carbon budget under reduced water and nitrogen conditions, indicating carbon absorption.”
e1“carbon fixation of tomato organs initially increased”
Claim · model-written summary
W2N2 outperformed other regimes in net carbon absorption.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- W2N2 treatmente0
- Outcome
- net carbon absorptione0
- Direction
- outperformede0
- Comparator
- otherse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the W2N2 treatment outperformed others in net carbon absorption”
e1“carbon fixation of tomato organs initially increased”
The same questions in other papers
nitrogen · environment: emissions · Solanum lycopersicum (tomato)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
1 paper more in this group
See all 5 papers →irrigation · environment: emissions · Solanum lycopersicum (tomato)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
1 paper more in this group
See all 5 papers →nitrogen · molecular: metabolites · Solanum lycopersicum (tomato)Positive and negative results
25 papers in the same direction as this paper · 18 in the opposite direction · 2 reporting no difference from an alternative
- negative
- negative
- no effect
42 papers more in this group
See all 46 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.