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5种水生植物对模拟菜地径流中总氮和硝氮净化效果

邵凯迪 段婧婧 薛利红 薛利祥 周贝贝 徐德福

邵凯迪, 段婧婧, 薛利红, 薛利祥, 周贝贝, 徐德福. 5种水生植物对模拟菜地径流中总氮和硝氮净化效果[J]. 环境工程技术学报, 2020, 10(3): 406-413. doi: 10.12153/j.issn.1674-991X.20190160
引用本文: 邵凯迪, 段婧婧, 薛利红, 薛利祥, 周贝贝, 徐德福. 5种水生植物对模拟菜地径流中总氮和硝氮净化效果[J]. 环境工程技术学报, 2020, 10(3): 406-413. doi: 10.12153/j.issn.1674-991X.20190160
SHAO Kaidi, DUAN Jingjing, XUE Lihong, XUE Lixiang, ZHOU Beibei, XU Defu. Purification effect of five kinds of hydrophytes on total nitrogen and nitrate in simulated vegetable field runoff water[J]. Journal of Environmental Engineering Technology, 2020, 10(3): 406-413. doi: 10.12153/j.issn.1674-991X.20190160
Citation: SHAO Kaidi, DUAN Jingjing, XUE Lihong, XUE Lixiang, ZHOU Beibei, XU Defu. Purification effect of five kinds of hydrophytes on total nitrogen and nitrate in simulated vegetable field runoff water[J]. Journal of Environmental Engineering Technology, 2020, 10(3): 406-413. doi: 10.12153/j.issn.1674-991X.20190160

5种水生植物对模拟菜地径流中总氮和硝氮净化效果

doi: 10.12153/j.issn.1674-991X.20190160
详细信息
    作者简介:

    邵凯迪(1994—),男,硕士研究生,研究方向为水污染治理,kdShao@163.com

    通讯作者:

    薛利红 E-mail: njxuelihong@gmail.com

  • 中图分类号: X524

Purification effect of five kinds of hydrophytes on total nitrogen and nitrate in simulated vegetable field runoff water

More Information
    Corresponding author: XUE Lihong E-mail: njxuelihong@gmail.com
  • 摘要: 近年来,太湖地区蔬菜大棚种植面积日益增加,高施肥量造成菜地土壤硝氮( NO 3 - -N)积累严重,夏季揭棚期菜地在降雨初期会产生高浓度 NO 3 - -N(富硝)的地表径流。为净化菜地富硝地表径流,选取苦草、伊乐藻、黄花水龙、狐尾藻和铜钱草5种常见水生植物,开展了模拟富硝地表径流的箱内净化试验。结果表明:在模拟径流总氮(TN)浓度为6.32~6.80 mg/L、 NO 3 - -N浓度为4.76~5.09 mg/L时,5种水生植物在试验初期(第1周)均表现出较好的氮去除效果,TN和 NO 3 - -N去除率分别超过80%和90%,试验后期(第3、4周)苦草、伊乐藻和铜钱草对TN、 NO 3 - -N的去除率明显下降,而黄花水龙和狐尾藻仍保持较高的 NO 3 - -N去除率(90%以上);在模拟径流TN浓度为15.62~18.00 mg/L, NO 3 - -N浓度为13.19~13.96 mg/L时,5种水生植物的生长均受到不同程度的胁迫,但黄花水龙和狐尾藻对氮去除能力显著高于其他植物;黄花水龙和狐尾藻具有较大的生物量,使其具有良好的氮去除能力,2种植物通过反硝化等途径去除的氮在不同处理间无显著差异,黄花水龙和狐尾藻较适宜净化富硝地表径流。

     

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  • 收稿日期:  2019-09-12
  • 刊出日期:  2020-05-20

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