Abstract
Abstract Nitrogen (N) and phosphorus (P) losses from farmland pose a significant threat to non-point source pollution in plateau lakes. Reducing nutrient loss from cropland is essential for the sustainable agricultural and ecological development of plateau lakes. The study aimed to investigate the effects of optimizing irrigation and fertilization on N and P losses based on field experiments and density functional theory calculation. The findings showed that ditch irrigation contributes to N and P leaching through their interactions with water and colloids, while drip irrigation reduces the transfer capacity for N and P by decreasing the intensity and volume of leachates. Additionally, changing from conventional fertilization to multiple fertilization based on the nutrient needs of corn significantly improved fertilizer efficiency, resulting in reductions in N and P losses of 25.2–72.4% and 24.2–67.6%, respectively. Additionally, the optimization of irrigation and fertilization led to an 11.3% improvement in crop yield. These results contribute to a better understanding of the mechanisms through which agricultural practices affect nutrient losses and have significant implications for optimizing farmland management in the Erhai Lake basin. Importantly, this research is of great significance in mitigating the threat of agricultural non-point source pollution in ecologically fragile plateau lakes.
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Claims 6
Claim · model-written summary
Ditch irrigation contributed to nitrogen leaching via water and colloid interactions.
- Taxon
- corn
Zea mays subsp. mayse1 - Treatment
- ditch irrigatione0
- Outcome
- Ne0
- Qualifier
- interactions with water and colloidse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ditch irrigation contributes to N and P leaching through their interactions with water and colloids”
e1“changing from conventional fertilization to multiple fertilization based on the nutrient needs of corn significantly improved fertilizer efficiency”
Claim · model-written summary
Drip irrigation reduced nitrogen and phosphorus transfer by reducing leachate intensity and volume.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- drip irrigatione0
- Outcome
- transfer capacity for N and Pe0
- Qualifier
- decreasing the intensity and volume of leachatese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drip irrigation reduces the transfer capacity for N and P by decreasing the intensity and volume of leachates”
e1“changing from conventional fertilization to multiple fertilization based on the nutrient needs of corn significantly improved fertilizer efficiency”
Claim · model-written summary
Multiple fertilization based on corn nutrient needs improved fertilizer efficiency relative to conventional fertilization.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- multiple fertilizatione0
- Outcome
- fertilizer efficiencye0
- Direction
- improvede0
- Comparator
- conventional fertilizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“changing from conventional fertilization to multiple fertilization based on the nutrient needs of corn significantly improved fertilizer efficiency”
Claim · model-written summary
Multiple fertilization reduced nitrogen losses by 25.2–72.4%.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- multiple fertilizatione1
- Outcome
- Ne0
- Direction
- reductionse0
- Value
- 25.2–72.4%e0
- Comparator
- conventional fertilizatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulting in reductions in N and P losses of 25.2–72.4% and 24.2–67.6%, respectively”
e1“changing from conventional fertilization to multiple fertilization based on the nutrient needs of corn significantly improved fertilizer efficiency”
Claim · model-written summary
Multiple fertilization reduced phosphorus losses by 24.2–67.6%.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- multiple fertilizatione1
- Outcome
- Pe0
- Direction
- reductionse0
- Value
- 24.2–67.6%e0
- Comparator
- conventional fertilizatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulting in reductions in N and P losses of 25.2–72.4% and 24.2–67.6%, respectively”
e1“changing from conventional fertilization to multiple fertilization based on the nutrient needs of corn significantly improved fertilizer efficiency”
Claim · model-written summary
Optimizing irrigation and fertilization increased crop yield by 11.3%.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- optimization of irrigation and fertilizatione0
- Outcome
- crop yielde0
- Direction
- improvemente0
- Value
- 11.3%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the optimization of irrigation and fertilization led to an 11.3% improvement in crop yield”
e1“changing from conventional fertilization to multiple fertilization based on the nutrient needs of corn significantly improved fertilizer efficiency”
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