Characteristics of annual changes in water physicochemical factors and fuzzy comprehensive evaluation of water quality in rice-duck-crayfish integrated model

XU Zhiwei; HOU Yingxia; GU Zemao

doi:10.13300/j.cnki.hnlkxb.2025.03.008

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Characteristics of annual changes in water physicochemical factors and fuzzy comprehensive evaluation of water quality in rice-duck-crayfish integrated model

更新时间：2026-11-05

- Characteristics of annual changes in water physicochemical factors and fuzzy comprehensive evaluation of water quality in rice-duck-crayfish integrated model
- Journal of Huazhong Agricultural University Vol. 44, Issue 3, Pages: 65-73(2025)
- 作者机构：
  
  1.华中农业大学水产学院/双水双绿研究院/长江经济带大宗水生生物产业绿色发展教育部工程研究中心，武汉 430070
  2.湖北省农业农村厅，武汉 430070
  3.湖北洪山实验室，武汉 430070
- 作者简介：
- 基金信息：
- DOI：10.13300/j.cnki.hnlkxb.2025.03.008
  CLC： S511;X824
- Received：13 April 2025，
  
  Published：06 May 2025
- 稿件说明：
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徐智威，侯应霞，顾泽茂.稻-鸭-虾种养模式水体理化因子周年变化特征及水质模糊综合评价［J］.华中农业大学学报，2025，44（3）：65‐73.

XU Zhiwei,HOU Yingxia,GU Zemao.Characteristics of annual changes in water physicochemical factors and fuzzy comprehensive evaluation of water quality in rice-duck-crayfish integrated model[J].Journal of Huazhong Agricultural University,2025,44(03):65-73.
徐智威，侯应霞，顾泽茂.稻-鸭-虾种养模式水体理化因子周年变化特征及水质模糊综合评价［J］.华中农业大学学报，2025，44（3）：65‐73. DOI： 10.13300/j.cnki.hnlkxb.2025.03.008.

XU Zhiwei,HOU Yingxia,GU Zemao.Characteristics of annual changes in water physicochemical factors and fuzzy comprehensive evaluation of water quality in rice-duck-crayfish integrated model[J].Journal of Huazhong Agricultural University,2025,44(03):65-73. DOI： 10.13300/j.cnki.hnlkxb.2025.03.008.

摘要

为探究稻-鸭-虾种养模式对水质的影响，于2023年3月至2024年1月在监利市新沟镇双水双绿科研基地对稻-鸭-虾种养模式（rice-duck-crayfish integrated model，RDCI）和稻-虾连作模式（rice-crayfish continuous culture model，RCCC）水体进行连续采样，并分析2种模式在不同时期（养虾期、水稻返青期、稻-鸭共作期、水稻成熟期和越冬期）的水体理化因子变化差异。结果显示：物理因子方面，RDCI模式中水温、溶氧和pH值的全年变化范围分别为3.23~33.50 ℃、2.42~11.75 mg/L和7.18~8.32，与RCCC基本一致。化学因子方面，RDCI中总氮、总磷、氨氮、硝态氮和化学需氧量的全年变化范围分别为0.54~2.12、0.13~0.50、0.16~0.56、0.06~0.40和5.58~18.35 mg/L，总体呈现先升后降的变化趋势，峰值出现在稻-鸭共作期。与RCCC相比，RDCI在养虾后期水体总氮、总磷、氨氮和硝态氮含量分别降低11.1%、6.1%、14.4%和17.4%；在稻-鸭共作期，上述指标分别上升81%~135%、46%~113%、55%~715%和137%~166%。根据GB 3838—2002《地表水环境质量标准》对RDCI水质进行模糊综合评价，结果显示RDCI养虾初期、水稻返青期、水稻成熟期和越冬期的水质符合Ⅲ级标准，养虾后期符合Ⅳ级标准，稻-鸭共作期符合Ⅴ级标准。研究表明，与RCCC相比，RDCI在养虾后期降低了水体养分盈余，在稻-鸭共作期补充了水体养分不足，从而提供了更好的水体环境。

Abstract

The effects of the rice-duck-crayfish integrated model （RDCI） on the water quality，continuous sampling and testing of water in RDCI，rice-crayfish continuous culture model （RCCC） were studied at the Shuangshui Shuanglü Research Base in Xingou Town，Jianli City from March 2023 to January 2024.The differences in the changes of water physicochemical factors during different stages including crayfish farming stage，rice regreening stage，rice-duck co-cultivation stage，rice mature stage，and overwintering stage for the two models were analyzed.The results showed that the range of annual variation in water temperature，dissolved oxygen，and pH in RDCI was 3.23-33.50 ℃，2.42-11.75 mg/L，and 7.18-8.32，basically consistent with that in RCCC.The range of annual variation in the content of total nitrogen，total phosphorus，ammonia nitrogen，nitrate nitrogen，and COD

in RDCI was 0.54-2.12 mg/L，0.13-0.50 mg/L，0.16-0.56 mg/L，0.06-0.40 mg/L，and 5.58-18.35 mg/L，having an overall trend of first increasing and then decreasing and a peak value at the stage of rice-duck co-culture.The content of TN，TP，NH

-N，and NO

-N in the water of RDCI at the late stage of crayfish farming decreased by 11.1%，6.1%，14.4%，and 17.4%，compared with that of RCCC.The indexes mentioned above in RDCI at the stage of rice-duck coexistence increased from 81% to 135%，46% to 113%，55% to 715%，and 137% to 166%，respectively.The water quality of RDCI met the class Ⅲ standard during the initial crayfish farming，rice regreening，rice maturity，and overwintering stages，met the class Ⅳ standard during the later crayfish farming stage，and met the class Ⅴ standards during the rice-duck co-culture stage according to the comprehensive fuzzy evaluation of water quality based on the “

Environmental Quality Standards for Surface Water

” （GB 3838—2002）.It is indicated that RDCI reduces the surplus of water nutrients at the late stage of crayfish farming and replenishes the nutrient deficiency in the water at the s

tage of rice-duck co-cultivation to provide a better water environment compared with RCCC.

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references

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