江苏农业学报2025，Vol.41Issue(4)：733-743,11.DOI:10.3969/j.issn.1000-4440.2025.04.012
不同种养模式稻田水体中浮游生物群落变化
Changes of plankton communities in paddy water under different rice-crayfish farming systems
摘要
Abstract
To reveal the differences in the plankton community structure in paddy field water under three cultivation modes,including rice-wheat rotation(RW),rice-crayfish rotation(RC1),and rice-crayfish co-cultivation(RC2),we in-vestigated the changes in the composition,density,and diversity index of plankton communities in paddy water.Additional-ly,we explored the relationships between different cultivation modes and the changes of physicochemical factors of paddy water and the plankton communities.The results showed that the total nitrogen(TN)content in RW mode was significantly higher than that in RC1 mode and RC2 mode(P＜0.05).The composition of phytoplankton community in paddy water under the three modes was similar.The dominant species of zooplankton were mainly rotifers,and the dominant species of phytoplankton were mainly Chloro-phyta phytoplankton and Bacillariophyta phytoplankton.During the grain-filling stage,the density of cladocerans and copepods in paddy water under RW mode was significantly lower than that under RC1 mode and RC2 mode.The average density of phytoplankton in Chlorophyta,Cyanophyta,Eu-glenophyta and Bacillariophyta in water was also significantly lower than that under RC1 mode and RC2 mode.During the tillering stage,the phytoplankton diversity index and evenness index in paddy water under RC2 mode were significantly higher than those under RC1 mode(P＜0.05).During the grain-filling stage,the phytoplankton diversity index and rich-ness index in paddy water under both the RC1 mode and RC2 mode were significantly higher than those under the RW mode(P＜0.05).The results of redundancy analysis(RDA)demonstrated that nitrite nitrogen(NO2-N),ammonia nitrogen(NH3-N),nitrate nitrogen(NO3--N),total nitrogen(TN),and total phosphorus(TP)were key environmental factors significantly affecting plankton communities in water.In general,the rice-crayfish co-cultivation mode exhibits superior wa-ter quality and higher plankton diversity and richness.关键词
克氏原螯虾/稻虾种养/浮游生物Key words
Procambarus clarkii/rice-crayfish co-cultivation/plankton分类
农业科技引用本文复制引用
王丹,许荟,徐宇,张婷,高迎莉,李旭光,许志强..不同种养模式稻田水体中浮游生物群落变化[J].江苏农业学报,2025,41(4):733-743,11.基金项目
不同稻虾综合种养模式下的稻田生态系统健康评价项目[CX(23)3007] （23）
江苏现代农业(克氏原螯虾)产业技术体系种质创新与苗种繁育创新团队项目[JATS(2023)372] （克氏原螯虾）
江苏省种业振兴"揭榜挂帅"项目[JBGS(2021)119] （2021）
