华北农学报 ›› 2002, Vol. 17 ›› Issue (1): 76-81. doi: 10.3321/j.issn:1000-7091.2002.01.016

所属专题: 小麦 玉米 土壤肥料

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大面积冬小麦夏玉米农田土壤的氨挥发

李贵桐1, 李保国1, 陈德立2   

  1. 1. 中国农业大学资源环境学院, 北京 100094;
    2. 墨尔本大学土地和食品学院, 澳大利亚维多利亚 3052
  • 收稿日期:2001-03-20 出版日期:2002-03-28
  • 作者简介:李贵桐(1968-),男,博士,副教授,主要从事土壤生物学、农田养分循环研究。
  • 基金资助:
    国家重点基础研究发展规划项目(973);中澳合作项目(ACIAR;LWR1/96/164 )

Ammonia Volatilization from Large Field Planted with Winter Wheat and Summer Maize

Li Guitong1, Li Baoguo1, Chen Deli2   

  1. 1. College of Resources and Environment, China Agricultural University, Beijing 100094, China;
    2. Institute of Land and Food Resources, Melburne University, Parkville Victoria 3052, Australia
  • Received:2001-03-20 Published:2002-03-28

摘要: 报道了利用微气象学法(梯度扩散法)测定大面积农田土壤氨挥发的试验结果。在华北平原种植冬小麦夏玉米的生产实际中,施肥后土壤氨挥发的损失量(N)在 18.9~63.5kg·hm-2之间,占施N量的9.9%~37.0%。氨挥发过程主要发生在日间,日内挥发高峰多出现 12:00~16:00,并与季节有关,土壤施尿素或碳铵后氨挥发日间变化方式基本一致。当表层1-cm土壤的NH4(N)下降到 20~30mg·kg-1时,施肥引起的氨挥发基本结束。

关键词: 氨挥发, 微气象学法, 农田

Abstract: The results of ammonia volatilization measured with micrometeorological(gradient diffusion) method in the field cropping with winter wheat and summer maize was reported .Under the production conditionn at the North Plain of China,the loss of ammonnia(N)after fertilizer application ranged from 18.9 to 63.5kg·hm-2,9.9% to 37.0% of the applied N .Am mania volatilizetion occurred mainly during the daytime and the peak volatilization appeared between 12:00-16:00 pm each day.The ammonia volatilization pattern after application of urea was generally the same as that of the ammonium bicarbonate.Under the experimental conditions,ammonia volatilization caused by N fertilizer application stopped when the ammonium concentration(N) in the top 1-cm layer soil decreased to 20-30mg·kg-1 soil.

Key words: Ammonia volatilization, Micrometeorological method, Large field

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引用本文

李贵桐, 李保国, 陈德立. 大面积冬小麦夏玉米农田土壤的氨挥发[J]. 华北农学报, 2002, 17(1): 76-81. doi: 10.3321/j.issn:1000-7091.2002.01.016.

Li Guitong, Li Baoguo, Chen Deli. Ammonia Volatilization from Large Field Planted with Winter Wheat and Summer Maize[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2002, 17(1): 76-81. doi: 10.3321/j.issn:1000-7091.2002.01.016.

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