Characteristics of changes in soil fertility in paddy field under model of rice-duck-crayfish

WU Lingyun; MA Tianqiao; ZHANG Wanyang; WANG Jinping; LI Xiaokun

doi:10.13300/j.cnki.hnlkxb.2025.03.010

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Characteristics of changes in soil fertility in paddy field under model of rice-duck-crayfish

更新时间：2026-11-05

- Characteristics of changes in soil fertility in paddy field under model of rice-duck-crayfish
- Journal of Huazhong Agricultural University Vol. 44, Issue 3, Pages: 84-90(2025)
- 作者机构：
  
  1.华中农业大学资源与环境学院，武汉 430070
  2.华中农业大学双水双绿研究院，武汉 430070
  3.华中农业大学植物科学技术学院，武汉 430070
- 作者简介：
- 基金信息：
- DOI：10.13300/j.cnki.hnlkxb.2025.03.010
  CLC： S511;S966.1
- Received：27 August 2024，
  
  Published：06 May 2025
- 稿件说明：
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吴玲云，马天桥，张万洋，等.稻-鸭-虾模式下稻田土壤肥力变化特征［J］.华中农业大学学报，2025，44（3）：84‐90.

WU Lingyun,MA Tianqiao,ZHANG Wanyang,et al.Characteristics of changes in soil fertility in paddy field under model of rice-duck-crayfish[J].Journal of Huazhong Agricultural University,2025,44(03):84-90.
吴玲云，马天桥，张万洋，等.稻-鸭-虾模式下稻田土壤肥力变化特征［J］.华中农业大学学报，2025，44（3）：84‐90. DOI： 10.13300/j.cnki.hnlkxb.2025.03.010.

WU Lingyun,MA Tianqiao,ZHANG Wanyang,et al.Characteristics of changes in soil fertility in paddy field under model of rice-duck-crayfish[J].Journal of Huazhong Agricultural University,2025,44(03):84-90. DOI： 10.13300/j.cnki.hnlkxb.2025.03.010.

摘要

为探究稻-鸭-虾种养模式对稻田土壤肥力的影响，于2022—2023年采用田间试验和取样测试分析的方法，比较了稻-鸭-虾种养模式和水稻单作模式下水稻收获后的土壤物理、化学和生物学性质，结合模糊综合评价法和简单线性评分法，综合评价了2种模式下的土壤综合肥力。结果显示：稻-鸭-虾模式种养2 a后，土壤微生物量氮含量显著降低了53.27%；土壤有机质、全氮、速效钾以及微生物量碳含量呈上升趋势，土壤pH值、速效氮、速效磷、酸性磷酸酶和碱性磷酸酶含量呈下降趋势，但均无显著差异。与水稻单作模式相比，除了微生物量氮含量，其他指标均呈不同程度降低的趋势。从土壤肥力角度来看，稻-鸭-虾种养模式和水稻单作模式均无显著差异，但稻-鸭-虾种养模式稻田土壤肥力指数呈上升趋势，增幅为7.94%，而水稻单作模式土壤肥力指数降低，且2023年稻-鸭-虾种养模式土壤肥力指数比水稻单作模式高3.03%。结果表明，2 a种养条件下稻-鸭-虾模式稻田土壤肥力无显著变化。

Abstract

The effects of the rice-duck-crayfish （CDR） model on soil fertility in paddy fields were studied by using field experiments and sampling tests from 2022 to 2023. The physical， chemical， and biological properties of soil after harvesting rice were compared between CDR and the rice monoculture （RM） model. The fertility of soil under two models was comprehensively evaluated by combining fuzzy comprehensive evaluation method and simple linear scoring method. The results showed that the content of microbial biomass nitrogen in soil significantly decreased by 53.27% after 2 years of CDR. The content of organic matter， total nitrogen， available potassium， and microbial biomass carbon in soil had an increasing trend， while the pH， the content of available nitrogen， available phosphorus， acid phosphatase， and alkaline phosphatase in soil had a decreasing trend， but there was no significant difference. All indexes except for the content of microbial biomass nitrogen had a decreasing trend to varying degrees compared with RM. There was no significant difference between CDR and RM in term of soil fertility. However， CDR had an upward trend in the soil fertility index of paddy fields， with an increase of 7.94%， while the soil fertility index of RM decreased， and the soil fertility index of CDR was 3.03% higher than that of RM in 2023. It is indicated that there was no significant change in soil fertility in paddy fields under two years of CDR.

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references

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