华中农业大学学报2025，Vol.44Issue(3)：65-73,9.DOI:10.13300/j.cnki.hnlkxb.2025.03.008
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
Characteristics of annual changes in water physicochemical factors and fuzzy comprehensive evaluation of water quality in rice-duck-crayfish integrated model
摘要
Abstract
The effects of the rice-duck-crayfish integrated model(RDCI)on the water quality,contin-uous 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 tem-perature,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 phospho-rus,ammonia nitrogen,nitrate nitrogen,and CODMn 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 de-creasing and a peak value at the stage of rice-duck co-culture.The content of TN,TP,NH4+-N,and NO3--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 coex-istence 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 ma-turity,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 replen-ishes the nutrient deficiency in the water at the stage of rice-duck co-cultivation to provide a better water en-vironment compared with RCCC.关键词
稻-鸭-虾种养模式/稻-虾连作/水体理化因子/水质模糊综合评价Key words
rice-duck-crayfish integrated model(RDCI)/rice-crayfish continuous culture model(RCCC)/physicochemical factors of water/fuzzy comprehensive evaluation of water quality分类
农业科技引用本文复制引用
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):65-73,9.基金项目
国家自然科学基金项目(32270481) （32270481）
湖北洪山实验室重大项目(2021HSZD002) （2021HSZD002）
国家重点研发计划项目(2022YFD2400700) （2022YFD2400700）
湖北省第四批现代农业产业技术体系水产产业技术体系项目(2023HBSTX4-05) （2023HBSTX4-05）
湖北省农业科技创新中心项目(2025-621-000-001-029) （2025-621-000-001-029）
