Abstract
To address the scientific challenges of low water–fertilizer use efficiency and the difficulty in achieving the synergistic improvement of the yield and quality in solar greenhouse cucumber production on the North China Plain, this study investigated the effects of varying water and nitrogen supplies on cucumber growth, yields, water–nitrogen use efficiency, and quality. The aim was to establish optimized water and nitrogen management strategies for high-yield, high-quality, and resource-efficient cultivation. A two-factor completely randomized design was implemented, with three irrigation levels (W1: 1.0 Ep−20, W2: 0.75 Ep−20, and W3: 0.5 Ep−20) based on cumulative pan evaporation and four nitrogen application amounts (N1: 432 kg·ha−1, N2: 360 kg·ha−1, N3: 288 kg·ha−1, N4: 216 kg·ha−1). Cucumber growth indicators were observed during the growing season, and the water and nitrogen application rates were scientifically optimized. The results showed that a full water and nitrogen supply enhanced the leaf area index, dry weight accumulation, and yield. Moderate water and nitrogen savings had a minimal impact on plant growth and production while significantly improving the water and fertilizer use efficiency. Using principal component analysis to comprehensively evaluate the cucumber quality, it was found that the irrigation amount had a significant impact on quality, with the quality improving as the irrigation amount decreased. By employing a regression formula and spatial analysis methods, this study optimized the water and nitrogen application rates with the goals of maximizing the cucumber yield, water–nitrogen efficiency, and quality. For spring cucumbers, the recommended combination is an irrigation amount of 225~240 mm and a nitrogen application amount of 350~380 kg·ha−1. For autumn cucumbers, the recommended combination is an irrigation amount of 105~120 mm and a nitrogen application amount of 375~400 kg·ha−1. This research provides theoretical and technical support for high-yield, high-quality, and efficient irrigation and nitrogen management in solar greenhouses in the North China Plain.
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Claims 6
Claim · model-written summary
Full water and nitrogen supply enhanced cucumber leaf area index, dry weight accumulation, and yield.
- Taxon
- cucumber
Cucumis sativust0 - Treatment
- full water and nitrogen supplye0
- Outcome
- leaf area index, dry weight accumulation, and yielde0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“full water and nitrogen supply enhanced the leaf area index, dry weight accumulation, and yield”
t0“cucumber”
Claim · model-written summary
Moderate water and nitrogen savings had minimal impact on cucumber growth and production.
- Taxon
- CucumberCucumis sativust0
- Treatment
- Moderate water and nitrogen savingse0
- Outcome
- plant growth and productione0
- Direction
- minimal impacte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moderate water and nitrogen savings had a minimal impact on plant growth and production”
t0“Cucumber”
Claim · model-written summary
Moderate water and nitrogen savings significantly improved water and fertilizer use efficiency.
- Taxon
- CucumberCucumis sativust0
- Treatment
- Moderate water and nitrogen savingse0
- Outcome
- water and fertilizer use efficiencye0
- Direction
- improvinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moderate water and nitrogen savings had a minimal impact on plant growth and production while significantly improving the water and fertilizer use efficiency”
t0“Cucumber”
Claim · model-written summary
Irrigation amount significantly affected cucumber quality, which improved as irrigation decreased.
- Taxon
- CucumberCucumis sativust0
- Treatment
- irrigation amounte0
- Outcome
- qualitye0
- Direction
- improvinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the irrigation amount had a significant impact on quality, with the quality improving as the irrigation amount decreased”
t0“Cucumber”
Claim · model-written summary
The authors recommend 225~240 mm irrigation and 350~380 kg·ha−1 nitrogen for spring cucumber.
- Taxon
- cucumbersCucumis sativuse0
- Organ / stage
- springe0
- Outcome
- recommended combinatione0
- Value
- 225~240 mme0
- Qualifier
- 350~380 kg·ha−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For spring cucumbers, the recommended combination is an irrigation amount of 225~240 mm and a nitrogen application amount of 350~380 kg·ha−1.”
Claim · model-written summary
The authors recommend 105~120 mm irrigation and 375~400 kg·ha−1 nitrogen for autumn cucumber.
- Taxon
- cucumbersCucumis sativuse0
- Organ / stage
- autumne0
- Outcome
- recommended combinatione0
- Value
- 105~120 mme0
- Qualifier
- 375~400 kg·ha−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For autumn cucumbers, the recommended combination is an irrigation amount of 105~120 mm and a nitrogen application amount of 375~400 kg·ha−1.”
The same questions in other papers
nitrogen · nutrient: efficiency · Cucumis sativus (cucumber)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- negative
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See all 5 papers →nitrogen · yield · Cucumis sativus (cucumber)Positive and negative results
23 papers in the same direction as this paper · 8 in the opposite direction · 2 reporting no difference from an alternative
- negative
- no effect
- negative
30 papers more in this group
See all 34 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.