成都平原农区地下水中NO3--N含量变化规律研究
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

* 四川省应用基础基金项目“成都平原地下水硝态氮污染机理研究”资助


MONITORING NO3--N VARIATION OF GROUNDWATER IN AGRICULTURE REGION OF CHENGDU PLAIN
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    采用硝酸根电极法对成都平原温江县天府乡农区田间和水井的地下水NO3--N含量进行了一年多的连续测定,探讨了该农区地下水中NO3--N的变化规律和氮肥用量的影响.结果表明:(1)田间地下水NO3--N含量周年变化规律是冬春枯水季较高,且变幅较大(0.36~2.62mg L-1),平均值为2.59mg L-1;夏秋丰水季较低,且变幅较小(0.84~5.48mg L-1),平均值为1.10mg L-1.(2)前作麦季氮肥施用量,对稻季地下水中NO3--N含量有明显影响,当前作施纯氮达375kg hm-2时,稻季地下水NO3--N含量最高达34.6mg L-1,其平均值为17.97mg L-1,是施纯氮150kg hm-2平均值1.30mg L-1的13.7倍.(3)井水中NO3--N含量变化幅度为0.14~16.53mg L-1,3口井水平均值分别为2.54、3.60、6.52mg L-1,未超出我国生活饮用水卫生标准,但明显高于灌溉水NO3--N含量的平均值1.81mg L-1.(4)地下水位的高低与井水中NO3--N含量没有线性关系.

    Abstract:

    NO3--N content of groundwater in fields and wells at Tianfu village of Chengdu plain was monitored by using NO3--N electrode method for more than one year.Results showed that:a.NO3--N concentration of groundwater in fields in winter and spring was higher than that in summer and autumn.The former ranged from 0.36 to 2.62 mg L-1 with an average of 2.59 mg L-1,and the corresponding figure for the latter was 0.84~5.48 mg L-1 and 1.10 mg L-1,respectively.b.Rate of applied N in wheat cropping season greatly affected NO3--N concentration of groundwater in the fields of subsequent rice cropping season.The NO3--N concentration of groundwater averaged 17.9 mg L-1 when N application rate was 375 kg hm2,and the average of NO3--N concentration was only 1.3 mg L-1 when 150 kg hm-2 was applied.c.NO3--N in 3 wells was in the range of 0.14~16.5 mg L-1 with the mean value of 2.54,3.60,and 6.52 mg L-1,respectively,higher than the average(1.81 mg L-1)of NO3--N concentration of irrigation water in the region.d.Level of groundwater was not correlated to NO3--N content of wells.

    参考文献
    相似文献
    引证文献
引用本文

赵燮京,赵小蓉,王昌桃.成都平原农区地下水中NO3--N含量变化规律研究[J].土壤学报,2004,41(1):56-60. DOI:10.11766/trxb200211190109 Zhao Xiejing, Zhao Xiaorong, Wang Changtao. MONITORING NO3--N VARIATION OF GROUNDWATER IN AGRICULTURE REGION OF CHENGDU PLAIN[J]. Acta Pedologica Sinica,2004,41(1):56-60.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2002-11-19
  • 最后修改日期:2003-08-20
  • 录用日期:
  • 在线发布日期: 2013-02-25
  • 出版日期: