Paper · 2026 · Agriculture

Mechanical Side-Deep Fertilization Synergizes with Controlled-Release Fertilizer to Drive Low-Carbon and High-Efficiency Rice (Oryza sativa L.) Production

Manman Yuan; Jiabao Wang; Gang Wu; et al.

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verbatim quotes
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citations
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Open access · cc-by

Abstract

Against the backdrop of escalating global climate challenges, minimizing carbon emissions while enhancing energy efficiency in rice production has emerged as a core pathway toward achieving agricultural carbon neutrality. A two-year field study conducted in the Yangtze River Delta evaluated three rice cultivation practices: the farmers’ practice pattern (FPP), surface-applied controlled-release fertilizer with machine transplanting (S-CRF), and side-deep applied controlled-release fertilizer with machine transplanting (SD-CRF). Compared to FPP and S-CRF, SD-CRF increased grain yields by 11.3% and 9.2%, respectively, while reducing total energy input by 2.5% and 2.4%. It lowered the carbon intensity of production by 9.7% and 8.2% relative to FPP and S-CRF, primarily through reducing fertilizer/labor-associated carbon inputs and enhancing carbon-use efficiency via higher yield. Economically, SD-CRF outperformed traditional practices, achieving an 81.8% increase in net income and a 37.4% higher benefit-to-cost ratio compared with FPP, respectively, driven by labor cost savings and improved productivity. Notably, SD-CRF reduces labor input by 40.0% compared with FPP, simplifies fertilization operations, lowers farmers’ operational technical thresholds, and effectively boosts their economic income. Data envelopment analysis (DEA) further validated SD-CRF’s superior eco-efficiency, highlighting its dual advantage in balancing yield enhancement and environmental sustainability. Further clarification of SD-CRF application technical indicators, refinement of agronomic practices and machinery efficiency, and promotion of the integrated system’s synergistic benefits and scalable adoption are required to support global sustainable food systems and carbon neutrality goals.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

SD-CRF raised rice grain yield by 11.3% relative to FPP.

Treatment
SD-CRFe0
Outcome
grain yieldse0
Direction
increasede0
Value
11.3%e0
Comparator
FPPe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Compared to FPP and S-CRF, SD-CRF increased grain yields by 11.3% and 9.2%, respectively”

✓ located verbatim in the source · abstract, characters 534–622 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 121–125 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

SD-CRF raised rice grain yield by 9.2% relative to S-CRF.

Treatment
SD-CRFe0
Outcome
grain yieldse0
Direction
increasede0
Value
9.2%e0
Comparator
S-CRFe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Compared to FPP and S-CRF, SD-CRF increased grain yields by 11.3% and 9.2%, respectively”

✓ located verbatim in the source · abstract, characters 534–622 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 121–125 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

SD-CRF reduced total energy input by 2.5% relative to FPP.

Treatment
SD-CRFe0
Outcome
total energy inpute0
Direction
reducinge0
Value
2.5%e0
Comparator
FPPe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Compared to FPP and S-CRF, SD-CRF increased grain yields by 11.3% and 9.2%, respectively, while reducing total energy input by 2.5% and 2.4%”

✓ located verbatim in the source · abstract, characters 534–674 · show in text ↑
t0

“Rice (Oryza sativa L.) Production”

✓ located verbatim in the source · title, characters 121–154 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

SD-CRF reduced total energy input by 2.4% relative to S-CRF.

Treatment
SD-CRFe0
Outcome
total energy inpute0
Direction
reducinge0
Value
2.4%e0
Comparator
S-CRFe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Compared to FPP and S-CRF, SD-CRF increased grain yields by 11.3% and 9.2%, respectively, while reducing total energy input by 2.5% and 2.4%”

✓ located verbatim in the source · abstract, characters 534–674 · show in text ↑
t0

“Rice (Oryza sativa L.) Production”

✓ located verbatim in the source · title, characters 121–154 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

SD-CRF lowered carbon intensity by 9.7% relative to FPP.

Outcome
carbon intensity of productione0
Direction
lowerede0
Value
9.7%e0
Comparator
FPPe0

Not reportedTreatment

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“It lowered the carbon intensity of production by 9.7% and 8.2% relative to FPP and S-CRF”

✓ located verbatim in the source · abstract, characters 676–764 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 121–125 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

SD-CRF lowered carbon intensity by 8.2% relative to S-CRF.

Outcome
carbon intensity of productione0
Direction
lowerede0
Value
8.2%e0
Comparator
S-CRFe0

Not reportedTreatment

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“It lowered the carbon intensity of production by 9.7% and 8.2% relative to FPP and S-CRF”

✓ located verbatim in the source · abstract, characters 676–764 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 121–125 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

SD-CRF increased net income by 81.8% compared with FPP.

Treatment
SD-CRFe0
Outcome
net incomee0
Direction
increasee0
Value
81.8%e0
Comparator
FPPe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“SD-CRF outperformed traditional practices, achieving an 81.8% increase in net income and a 37.4% higher benefit-to-cost ratio compared with FPP”

✓ located verbatim in the source · abstract, characters 903–1046 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 121–125 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

SD-CRF increased benefit-to-cost ratio by 37.4% compared with FPP.

Treatment
SD-CRFe0
Outcome
benefit-to-cost ratioe0
Direction
highere0
Value
37.4%e0
Comparator
FPPe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“SD-CRF outperformed traditional practices, achieving an 81.8% increase in net income and a 37.4% higher benefit-to-cost ratio compared with FPP”

✓ located verbatim in the source · abstract, characters 903–1046 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 121–125 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

SD-CRF reduced labor input by 40.0% compared with FPP.

Treatment
SD-CRFe0
Outcome
labor inpute0
Direction
reducese0
Value
40.0%e0
Comparator
FPPe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“SD-CRF reduces labor input by 40.0% compared with FPP”

✓ located verbatim in the source · abstract, characters 1127–1180 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 121–125 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

SD-CRF had superior eco-efficiency in data envelopment analysis.

Outcome
eco-efficiencye0
Direction
superiore0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Data envelopment analysis (DEA) further validated SD-CRF’s superior eco-efficiency”

✓ located verbatim in the source · abstract, characters 1315–1397 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 121–125 · show in text ↑

transplanting · yield · Oryza sativa (rice)Positive and negative results

1,078 papers: 922 positive, 156 negative or no effect

921 papers in the same direction as this paper · 132 in the opposite direction · 24 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

1,074 papers more in this group

See all 1,078 papers →

fertilization · yield · Oryza sativa (rice)Positive and negative results

3,455 papers: 3,183 positive, 272 negative or no effect

3,182 papers in the same direction as this paper · 207 in the opposite direction · 65 reporting no difference from an alternative

  1. positive
  2. no effect
  3. no effect

3,451 papers more in this group

See all 3,455 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.