胡春胜, 程一松, 高鹭, 李艳冬. 太行山山前平原冬小麦田深层土体硝态氮累积特征研究[J]. 中国生态农业学报(中英文), 2001, 9(1): 19-20.
引用本文: 胡春胜, 程一松, 高鹭, 李艳冬. 太行山山前平原冬小麦田深层土体硝态氮累积特征研究[J]. 中国生态农业学报(中英文), 2001, 9(1): 19-20.
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HU Chun-Sheng, CHENG Yi-Song, GAO Lu, LI Yan-Dong. On the nitrate-N accumulated characteristics in deep soil layer of winter wheat field in Taihang Piedmont[J]. Chinese Journal of Eco-Agriculture, 2001, 9(1): 19-20.
Citation: HU Chun-Sheng, CHENG Yi-Song, GAO Lu, LI Yan-Dong. On the nitrate-N accumulated characteristics in deep soil layer of winter wheat field in Taihang Piedmont[J]. Chinese Journal of Eco-Agriculture, 2001, 9(1): 19-20.
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太行山山前平原冬小麦田深层土体硝态氮累积特征研究

On the nitrate-N accumulated characteristics in deep soil layer of winter wheat field in Taihang Piedmont

    摘要
  • 摘要: 农田氮素(N)淋失是N素损失的重要途径之一。采集土壤溶液并测定其硝态氮(NO-3-N)，对不同施N肥处理下40～220cm土层的NO-3-N累积特征进行了研究。结果表明，不同施N肥处理，对不同土层中NO-3-N累积影响很大。太行山山前平原竭土农田80cm土层和40～160cm土层为NO-3-N高度聚集层，入冬后麦田NO-3-N有所累积，易流失；不同土层NO-3-N累积与N肥投入呈直线关系，N肥过量投入易造成深土层NO-3-N累积并流失。

     

    Abstract: Nitrogen leaching of farmland is one of the important way of nitrogen loss.By sampling soil solution and analyzing its content of nitrate-N, nitrate-N accumulated characteristics in different N treatments in 40～220cm soil layer are studied. The results showed that the different N treatments affected greatly nitrateN accumulation in different soil layers. soil nitrate-N has highly accumulated in 80cm and 140～160cm layer and has an increasing trend of N accumulation in winter season. There is a linear correlation between nitrate-N a ccumulation in different layers and N input. Superfluous N input would arise N accumulating in deep soil and losing.

     

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