• ISSN 1008-505X
  • CN 11-3996/S
陈子明, 袁锋明, 姚造华, 周春生, 傅高明, 宋永林, 李小平, . 北京潮土NO3—N在土体中的移动特点及其淋失动态[J]. 植物营养与肥料学报, 1995, 1(2): 71-79. DOI: 10.11674/zwyf.1995.0211
引用本文: 陈子明, 袁锋明, 姚造华, 周春生, 傅高明, 宋永林, 李小平, . 北京潮土NO3—N在土体中的移动特点及其淋失动态[J]. 植物营养与肥料学报, 1995, 1(2): 71-79. DOI: 10.11674/zwyf.1995.0211
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Chen Ziming, Yuan Fengmlng, Yao Zaohua, Zhou Chunsheng, Fu Gaoming, Song Yongllng, Li Xiaoping, Soils and, Fertilizers Institute. THE MOVEMENT AND LEACHING LOSS OF NO3-N IN PROFILE OF CHAO SOIL IN BEIJING[J]. Journal of Plant Nutrition and Fertilizers, 1995, 1(2): 71-79. DOI: 10.11674/zwyf.1995.0211
Citation: Chen Ziming, Yuan Fengmlng, Yao Zaohua, Zhou Chunsheng, Fu Gaoming, Song Yongllng, Li Xiaoping, Soils and, Fertilizers Institute. THE MOVEMENT AND LEACHING LOSS OF NO3-N IN PROFILE OF CHAO SOIL IN BEIJING[J]. Journal of Plant Nutrition and Fertilizers, 1995, 1(2): 71-79. DOI: 10.11674/zwyf.1995.0211
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北京潮土NO3—N在土体中的移动特点及其淋失动态

THE MOVEMENT AND LEACHING LOSS OF NO3-N IN PROFILE OF CHAO SOIL IN BEIJING

    摘要
  • 摘要: 利用养分渗滤池研究了北京潮土地区春小麦夏玉米连作期间NO3N在土壤剖面中移动的时空动态。结果表明,NO3N的移动同降雨、灌水以及整个土壤系统中的水分状况密切相关。在春小麦期间只有个别处理在020cm和20-40cm中有显著移动,而夏玉米期间在0130cm的土体中NO3N发生了波浪式的移动。淋失量同当时的降雨量线性相关。130cm深处NO3N含量在淋失高峰期可达10mgN.L-1以上。此外,NO3N的移动同尿素施用量的多少有着密切关系,而尿素、硝铵和硫铵等肥料品种之间差异则不明显。15N示踪结果表明,在春小麦前期尿素中的酰胺态氮或NH4N在0-20cm土层中直接移动,而来自肥料的NO3N在4060cm处移动;夏玉米生长期间,在60cm以下深处有大量来自尿素和硝铵等残留标记氮的NO3N移动。

     

    Abstract: In lysimeters the NO3-N change in Chao soil profile was observed during spring wheat and summer corn growing period in Beijing. The results of common chemical analysis indicated that the NO3-N movement was coresponded with the water condition. During spring wheat growth period the marked movement occrued only from 0-20cm to 20-40cm with certain experimental treatments. However, NO3-N moved down in the profile like a wave during summer corn period, thus it brought up leaching loss of NO3-N out of 130cm soil body. With 15N stable istope techenlque the directed movement of NH4-N and/or (NH2)2CO-N was observed in short distance in early stage of spring wheat growth period, and NO3-N derived from fertilizers might moved down to deeper horizon expecially during later stage and in the treatment with NH4NO3.During summer corn period the residual labelled N could moved down in increasing rate with urea treatment or to much dooper with NH4NO3 treatment.

     

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