Abstract
This study has investigated the suitable drip irrigation scheduling for tomato grown in solar greenhouse based on 20-cm pan evaporation (Epan) in North China Plain. Irrigation treatments included three irrigation frequencies (I1 10, I2 20 and I3 30 mm, and irrigation interval of 2–6 d for I1, 4–9 d for I2 and 8–12 d for I3) based on accumulated pan evaporation (Epan), and four plant-pan coefficients (Kcp1 0.5, Kcp2 0.7, Kcp3 0.9 and Kcp4 1.1). Results indicate that total irrigation amount, seasonal crop evapotranspiration (ET) and tomato yield (Y) were 185.1-365.8 mm, 249.1–388.0 mm and 99.6–151.8 t ha−1, respectively. Irrigation frequency and amount increased the yield, and second-degree polynomial relationship was found between Y and ET (R2=0.8671). Irrigation frequency did not increase mean fruit weight, diameter and length significantly but increased fruit number, total soluble solids content (TSS), TSS yield, fruit firmness and water use efficiency (WUE) and irrigation WUE (IWUE) significantly. Irrigation amount increased external quality of tomato but reduced TSS content, TSS yield, fruit firmness, WUE and IWUE significantly. Kcp3 and Kcp4 treatments had the highest fruit yield, but Kcp2 and Kcp3 treatments had the highest WUE. I1Kcp3 treatment (irrigation interval of 2–6 d, and Kcp=0.9) had higher IWUE, WUE, external quality, yield, and TSS yield, so it is recommended as the suitable irrigation scheduling for tomato grown in solar greenhouse in North China Plain.
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Claims 16
Claim · model-written summary
Total irrigation amount ranged from 185.1 to 365.8 mm.
- Taxon
- Tomato
Solanum lycopersicumt0 - Outcome
- total irrigation amounte0
- Value
- 185.1-365.8 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“total irrigation amount, seasonal crop evapotranspiration (ET) and tomato yield (Y) were 185.1-365.8 mm, 249.1–388.0 mm and 99.6–151.8 t ha−1, respectively”
t0“Tomato Grown in Solar Greenhouse”
Claim · model-written summary
Seasonal crop evapotranspiration ranged from 249.1 to 388.0 mm.
- Taxon
- tomato
Solanum lycopersicume0 - Outcome
- seasonal crop evapotranspiration (ET)e0
- Value
- 249.1–388.0 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“seasonal crop evapotranspiration (ET) and tomato yield (Y) were 185.1-365.8 mm, 249.1–388.0 mm and 99.6–151.8 t ha−1, respectively”
Claim · model-written summary
Tomato yield ranged from 99.6 to 151.8 t ha−1.
- Taxon
- tomato
Solanum lycopersicume0 - Outcome
- tomato yield (Y)e0
- Value
- 99.6–151.8 t ha−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“tomato yield (Y) were 185.1-365.8 mm, 249.1–388.0 mm and 99.6–151.8 t ha−1, respectively”
Claim · model-written summary
Irrigation frequency and amount increased tomato yield.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- Irrigation frequency and amounte0
- Outcome
- yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Irrigation frequency and amount increased the yield”
t0“Tomato Grown in Solar Greenhouse”
Claim · model-written summary
Tomato yield had a quadratic relation to evapotranspiration, with R2=0.8671.
- Taxon
- Tomato
Solanum lycopersicumt0 - Outcome
- Ye0
- Value
- R2=0.8671e0
- Comparator
- ETe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“second-degree polynomial relationship was found between Y and ET (R2=0.8671)”
e1“tomato yield (Y)”
t0“Tomato Grown in Solar Greenhouse”
Claim · model-written summary
Higher irrigation frequency did not significantly increase mean fruit weight, diameter or length.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- Irrigation frequencye0
- Outcome
- mean fruit weight, diameter and lengthe0
- Direction
- did not increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Irrigation frequency did not increase mean fruit weight, diameter and length significantly”
t0“Tomato Grown in Solar Greenhouse”
Claim · model-written summary
Higher irrigation frequency significantly increased fruit number, total soluble solids content and yield.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- Irrigation frequencye1
- Outcome
- fruit number, total soluble solids content (TSS), TSS yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“increased fruit number, total soluble solids content (TSS), TSS yield, fruit firmness and water use efficiency (WUE) and irrigation WUE (IWUE) significantly”
e1“Irrigation frequency did not increase”
t0“Tomato Grown in Solar Greenhouse”
Claim · model-written summary
Higher irrigation frequency significantly increased fruit firmness, WUE and IWUE.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- Irrigation frequencye1
- Outcome
- fruit firmness and water use efficiency (WUE) and irrigation WUE (IWUE)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“increased fruit number, total soluble solids content (TSS), TSS yield, fruit firmness and water use efficiency (WUE) and irrigation WUE (IWUE) significantly”
e1“Irrigation frequency did not increase”
t0“Tomato Grown in Solar Greenhouse”
Claim · model-written summary
Greater irrigation amount increased the external quality of tomato.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- Irrigation amounte0
- Outcome
- external qualitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Irrigation amount increased external quality of tomato”
Claim · model-written summary
Greater irrigation amount significantly reduced TSS content, TSS yield and fruit firmness.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- Irrigation amounte0
- Outcome
- TSS content, TSS yield, fruit firmnesse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Irrigation amount increased external quality of tomato but reduced TSS content, TSS yield, fruit firmness, WUE and IWUE significantly.”
Claim · model-written summary
Greater irrigation amount significantly reduced WUE and IWUE.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- Irrigation amounte0
- Outcome
- WUE and IWUEe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Irrigation amount increased external quality of tomato but reduced TSS content, TSS yield, fruit firmness, WUE and IWUE significantly.”
Claim · model-written summary
Kcp3 and Kcp4 produced the highest fruit yield.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- Kcp3 and Kcp4 treatmentse0
- Outcome
- fruit yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Kcp3 and Kcp4 treatments had the highest fruit yield”
t0“Tomato Grown in Solar Greenhouse”
Claim · model-written summary
Kcp2 and Kcp3 produced the highest WUE.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- Kcp2 and Kcp3 treatmentse0
- Outcome
- WUEe0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Kcp2 and Kcp3 treatments had the highest WUE”
t0“Tomato Grown in Solar Greenhouse”
Claim · model-written summary
I1Kcp3 had higher IWUE, WUE and external quality.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- I1Kcp3 treatment (irrigation interval of 2–6 d, and Kcp=0.9)e0
- Outcome
- IWUE, WUE, external qualitye0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“I1Kcp3 treatment (irrigation interval of 2–6 d, and Kcp=0.9) had higher IWUE, WUE, external quality, yield, and TSS yield”
t0“Tomato Grown in Solar Greenhouse”
Claim · model-written summary
I1Kcp3 had higher yield and TSS yield.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- I1Kcp3 treatment (irrigation interval of 2–6 d, and Kcp=0.9)e0
- Outcome
- yield, and TSS yielde0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“I1Kcp3 treatment (irrigation interval of 2–6 d, and Kcp=0.9) had higher IWUE, WUE, external quality, yield, and TSS yield”
t0“Tomato Grown in Solar Greenhouse”
Claim · model-written summary
The authors recommend I1Kcp3 irrigation for greenhouse tomato in the North China Plain.
- Taxon
- tomato
Solanum lycopersicume0 - Outcome
- I1Kcp3 treatmente1
- Setting
- North China Plaine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“it is recommended as the suitable irrigation scheduling for tomato grown in solar greenhouse in North China Plain”
e1“I1Kcp3 treatment (irrigation interval of 2–6 d, and Kcp=0.9)”
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