湖南农业大学学报（自然科学版）2025，Vol.51Issue(5)：58-65,8.DOI:10.13331/j.cnki.jhau.2025.05.008
增氧条件下根系生理生长特性对粉绿狐尾藻氮磷吸收的影响
Effects of root physiological growth characteristics on nitrogen and phosphorus uptake of Myriophyllum aquaticum under aerobic conditions
摘要
Abstract
To investigate the influences of root physiological growth characteristics on nitrogen(N)and phosphorus(P)uptake of Myriophyllum aquaticum under aerobic conditions,pot experiment was conducted.Root physiological growth characteristics,and N and P uptake characteristics of M.aquaticum were analysed.Five treatments were designed for 0,4,6,8,and 10 min under aerobic conditions,the relationships between root characteristics and N and P uptake of M.aquaticum were determined.The results showed that,compared with the non-aerated CK group,N and P uptake amounts per plant of the stems and leaves under aerobic conditions were higher than those of the roots;the total N and P uptake amounts per plant of the roots,stems and leaves,and the whole plant,and the root vitality,root volume,root surface area and total root length of M.aquaticum at different growth stages under aerobic conditions could be increased.The N uptake amount,P uptake amount per plant,root activity,root volume,root surface area,and total root length of M.aquaticum in T5 period under aerobic conditions increased by 3.39%-72.06%,14.40%-58.20%,69.37%-275.14%,18.57%-47.84%,5.80%-64.88%,2.70%-57.77%,respectively.The maximum values of N uptake amount per plant of T5 period(171.07 mg)in 6 minutes and P uptake amount per plant of T5 period(9.98 mg)in 8 minutes under aerobic conditions appeared,respectively.An aerobic treatment of 6-minute was a perfect aerobic time for regulating root physiological growth characteristics and promoting N and P uptake of M.aquaticum.In conclusion,aerobic regulation could significantly enhance the vitality and growth of the root system of M.aquaticum,and increase its uptake of N and P elements.关键词
粉绿狐尾藻/增氧处理/氮/磷/根系活力/根系生长Key words
Myriophyllum aquaticum/aerobic treatment/nitrogen/phosphorus/root vitality/root growth分类
环境科学引用本文复制引用
张文萍,刘全良,王润贤,沈科元,张鑫全,曾乐,关劼兮,颜智勇,李汉常,谭歆..增氧条件下根系生理生长特性对粉绿狐尾藻氮磷吸收的影响[J].湖南农业大学学报（自然科学版）,2025,51(5):58-65,8.基金项目
湖南省自然科学基金项目(2023JJ30311) （2023JJ30311）
湖南省水利科技项目(XSKJ2024064-4) （XSKJ2024064-4）
