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生态学杂志 ›› 1997, Vol. ›› Issue (5): 61-63.

• 研究报告 • 上一篇    下一篇

黑土农田化肥氮素去向的研究

王建国, 韩晓增, 刘鸿翔   

  1. 中国科学院黑龙江农业现代化研究所, 哈尔滨150040
  • 收稿日期:1996-11-19 修回日期:1997-02-28 出版日期:1997-10-10
  • 基金资助:
    中国科学院“八五”重大基础性研究资助

Study on the Fate of Nitrogenous Fertilizer in the Black Soil

Wang Jianguo, Han Xiaozeng, Liu Hongxiang   

  1. Heilongjiang Institute of Agricultural Modernization, Chinese Academy of Sciences, Harbin 150040
  • Received:1996-11-19 Revised:1997-02-28 Online:1997-10-10

关键词: 涡度相关, 雪面蒸发, 潜热, 日变化, 气象因子

Abstract: By means of 15 N experiments,the fate of nitrogenous fertilizer of maize and soybean and wheat in the farmland was studied. The results showed that in the black soil farmland of Songnen Plain,wheat's N fertilizer use efficiency was 33%-40% with average of 37%,the soil residual 12%-16% with average of 14% and the gaseous loss 47%-50%, with average of 48.6%. Maize's N fertilizer use efficiency,the soil residual and gaseous loss was 37%,14% and 49% respectively. Sweet clover's N fertilizer use efficiency,soil residual and gaseous loss was 9%,30% and about 60% respectively. And soybean's N fertilizer use efficiency was 33%-40% with average of 37%,the soil residual 25%-50% with average of 31% and the gaseous loss 15%-35% with average of 27%.

Key words: eddy covariance, snow  evaporation, latent heat, diurnal variation, meteorological factor.