湖北农业科学 ›› 2020, Vol. 59 ›› Issue (24): 75-81.doi: 10.14088/j.cnki.issn0439-8114.2020.24.016

• 资源·环境 • 上一篇    下一篇

江汉平原典型小区域沟渠底泥氮磷含量及其空间变异

聂玉莲1,2,3, 熊桂云2, 刘冬碧2, 黄敏1, 范先鹏2, 吴茂前2, 夏颖2, 刘毅4   

  1. 1.武汉理工大学资源与环境工程学院,武汉 430070;
    2.湖北省农业科学院植保土肥研究所/湖北省农业面源污染防治工程技术研究中心/国家农业环境潜江观测实验站/农业农村部废弃物肥料化利用重点实验室,武汉 430064;
    3.中蓝连海设计研究院,上海 201204;
    4.中国科学院武汉植物园,武汉 430074
  • 收稿日期:2020-10-20 出版日期:2020-12-25 发布日期:2021-01-21
  • 通讯作者: 夏颖,副研究员,博士,主要从事农业面源污染普查、监测与防治技术研究,(电子信箱)xiayinghappy105@163.com。
  • 作者简介:聂玉莲(1996-),女,江西上饶人,助理工程师,硕士,主要从事农业面源污染防治技术研究
  • 基金资助:
    国家重大研发项目课题(2018YFD0800502; 2016YFD0800506); 湖北省技术创新专项(2018ABA097); 湖北省农业科技创新中心项目(2016-620-000-001-019)

Content and spatial variability of nitrogen and phosphorus in dich sediment in a typical small area of Jianghan plain

NIE Yu-lian1,2,3, XIONG Gui-yun2, LIU Dong-bi2, HUANG Min1, FAN Xian-peng2, WU Mao-qian2, XIA Ying2, LIU Yi4   

  1. 1. School of Resources and Environmental Engineering, Wuhan University of Technology,Wuhan 430070,China;
    2. Plant Protection and Soil Fertilizer Institute, Hubei Academy of Agricultural Sciences/Hubei Engineering Research Center for Agricultural Non-point Source Pollution Control/ National Station for Qianjiang Agro-Environment /Key Laboratory of Fertilization from Agricultural Wastes, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China;
    3. Bluestar Lehigh Engineering Institute Co., Ltd.,Shanghai 201204,China;
    4. Wuhan Botanical Garden, Chinese Academy of Sciences,Wuhan 430074,China
  • Received:2020-10-20 Online:2020-12-25 Published:2021-01-21

摘要: 在湖北省江汉平原选择了一个由排灌渠自然围成的典型小区域,对其中农田排灌沟、斗渠和支渠0~10 cm底泥中不同形态氮、磷的含量以及分布特征进行了监测分析。结果表明,在36个沟渠底泥样中,全氮含量为0.7~2.9 g/kg,平均值为1.79 g/kg;可溶性总氮含量为17~166 mg/kg,无机态氮占比为88.1%~94.5%,无机氮又以铵态氮为主,其占比为无机氮的84.7%~90.4%。底泥全磷含量为0.4~1.3 g/kg,平均值为0.60 g/kg,其中,Olsen-磷含量为10.2~131.7 mg/kg,占全磷的2.6%~10.1%;水溶性磷含量占Olsen-磷的0.5%~3.7%。底泥中全氮、可溶性总氮和铵态氮,以及全磷、Olsen-磷和水溶性磷两两间在α=0.01水平均呈极显著正相关。底泥中各形态氮素的平均含量在靠近鱼塘的斗渠中呈现最高值,而磷素则在靠近居民生活区的支渠中呈现最高值。

关键词: 沟渠底泥, 氮, 磷, 小区域, 江汉平原

Abstract: A typical small area naturally enclosed by drainage and irrigation canals was selected to monitor and analyze the content and spatial variability of nitrogen and phosphorus in 0~10 cm sediment. The results showed that in the 36 sediment samples, the total nitrogen content was 0.7~2.9 g/kg, the average value was 1.79 g/kg. The total soluble nitrogen content was 17~166 mg/kg, the proportion of inorganic nitrogen in total soluble nitrogen was 88.1%~94.5%, the main part of inorganic nitrogen was ammonium nitrogen, the proportion of which was 84.7%~90.4%. The total phosphorus content of the ditch sediment was 0.4~1.3 g/kg, which averaged 0.60 g/kg, the Olsen-P was 10.2~131.7 mg/kg, accounting for 2.6%~10.1% of the total phosphorus, and the water-soluble phosphorus content was 0.5%~3.7% of Olsen-P. The total nitrogen, total soluble nitrogen and ammonium nitrogen, as well as total phosphorus, Olsen-P and water-soluble phosphorus in the ditch sediment showed a very significant positive correlation at the level of α=0.01. The average value of various form nitrogen in the ditch sediment was the highest in the laternal canal near the fish pond, while the highest phosphorus content was observed in the branch canal near the residential area.

Key words: ditch sediment, nitrogen, phosphorus, small area, Jianghan plain

中图分类号: