Effects of farming models of rice-duck-crayfish on carbon emissions and carbon sequestration in rice paddy ecosystems

LIU Yintao; WANG Xiaodong; CAO Cougui; WANG Jinping; GU Zemao; LIU Juan; JIANG Yang

doi:10.13300/j.cnki.hnlkxb.2025.03.005

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Effects of farming models of rice-duck-crayfish on carbon emissions and carbon sequestration in rice paddy ecosystems

更新时间：2026-11-05

- Effects of farming models of rice-duck-crayfish on carbon emissions and carbon sequestration in rice paddy ecosystems
- Journal of Huazhong Agricultural University Vol. 44, Issue 3, Pages: 38-44(2025)
- 作者机构：
  
  1.华中农业大学植物科学技术学院，武汉 430070
  2.华中农业大学双水双绿研究院，武汉 430070
  3.华中农业大水产学院，武汉 430070
- 作者简介：
- 基金信息：
- DOI：10.13300/j.cnki.hnlkxb.2025.03.005
  CLC：
- Received：20 September 2024，
  
  Published：06 May 2025
- 稿件说明：
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刘银涛，王晓东，曹凑贵，等.稻-鸭-虾模式对稻田生态系统碳排放及碳固定的影响研究［J］.华中农业大学学报，2025，44（3）：38‐44.

LIU Yintao,WANG Xiaodong,CAO Cougui,et al.Effects of farming models of rice-duck-crayfish on carbon emissions and carbon sequestration in rice paddy ecosystems[J].Journal of Huazhong Agricultural University,2025,44(03):38-44.
刘银涛，王晓东，曹凑贵，等.稻-鸭-虾模式对稻田生态系统碳排放及碳固定的影响研究［J］.华中农业大学学报，2025，44（3）：38‐44. DOI： 10.13300/j.cnki.hnlkxb.2025.03.005.

LIU Yintao,WANG Xiaodong,CAO Cougui,et al.Effects of farming models of rice-duck-crayfish on carbon emissions and carbon sequestration in rice paddy ecosystems[J].Journal of Huazhong Agricultural University,2025,44(03):38-44. DOI： 10.13300/j.cnki.hnlkxb.2025.03.005.

摘要

为探究不同稻-鸭-虾种养模式与水稻单作模式和传统稻-虾种养模式的碳排放及碳固定特征差异，于湖北省荆州市华中农业大学双水双绿研究基地开展大田试验，以水稻品种华墨香5号、克氏原螯虾（

Procambarus clarki

）、肉鸭武禽10号为试验材料，研究水稻单作（monoculture，CK1）模式、稻-虾种植（rice-crayfish coculture，CK2）、稻-鸭-虾单元格投放（rice-duck-crayfish unit release model，CRXD）、稻-鸭-虾“游牧鸭”（rice-duckcrayfish “nomadic duck”model，NRXD）、稻-鸭-虾大田块（rice-duck-crayfish large field block model，BRXD）共5种养模式下稻田甲烷（methane， CH₄）、氧化亚氮（nitrous oxide， N₂O）排放、全球增温潜势（global warming potential， GWP）、温室气体排放强度（greenhouse gas emission intensity， GHGI）以及碳固定潜力。结果显示，相比传统水稻单作模式，稻-鸭-虾模式降低了稻田CH

排放、GWP、GHGI，碳中和效应显著增加。与水稻单作相比，稻-鸭-虾模式CH

的排放量降低了28.1%~32.1%，GWP降低了27.0%~30.7%，GHGI降低了23.0%~26.7%，碳固定增加了2 089 ~2 569 kg/hm

。与稻-虾种养相比，稻-鸭-虾模式的CH

排放量降低了18.6%~23.1%， GWP降低了17.9%~22.2%，GHGI下降18.7%~22.0%，碳固定增加了616~1 096 kg/hm

。结果表明，稻-鸭-虾模式可以降低稻田碳排放量，提高稻田碳中和潜力，其中稻-鸭-虾大田块模式固碳减排效果最佳。

Abstract

The characteristics of carbon emission and carbon sequestration under different farming models of rice-duck-crayfish were compared with those under the traditional farming model of single rice cropping and rice-crayfish farming.The rice variety Huamoxiang 5，the crayfish（

Procambarus clarkii

），and duck variety Wuqin No.10

were used to conduct a field experiment at the Shuangshui Shuanglü Institute Base of Huazhong Agricultural University in Jingzhou，Hubei Province.The effects of different farming models on the methane （CH₄） emission，nitrous oxide （N₂O） emission，global warming potential （GWP），greenhouse gas emission intensity （GHGI），and carbon sequestration potential in paddy fields were studied.The results showed that t

he CH₄ emissions，GWP，and GHGI under the farming model of rice-duck-crayfish reduced by 28.1% to 32.1%，27.0% to 30.7%，23.0% to 26.7%，while the carbon sequestration increased by 2 089 to 2 569 kg/hm² compared to that under the traditional model of single rice cropping.The CH₄ emissions，GWP，and GHGI under the farming model of rice-duck-crayfish reduced by 18.6% to 23.1%，17.9% to 22.2%，and 18.7% to 22.0%，while the carbon sequestration increased by 616 to 1 096 kg/hm² compared to that under the rice-crayfish farming model.It is indicated that the farming model of rice-duck-crayfish can reduce carbon emissions and increase the level of carbon neutrality in rice paddy fields，with the farming model of rice-duck-crayfish in large field blocks having the best effects on the reduction of emissions and the sequestration of carbon.

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references

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