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生态学杂志 ›› 1986, Vol. ›› Issue (2): 45-48,52.

• 研究报告 • 上一篇    下一篇

现代化农田生态系统氮素来源和去向的数量特征

吴珊眉   

  1. 南京农业大学
  • 收稿日期:1985-03-08 出版日期:1986-04-10

Quantitative Characterization of N-Inputs and Outputs in Modern Agroecosystems

Wu Shanmei   

  1. Nanjing Agricultural University
  • Received:1985-03-08 Online:1986-04-10

关键词: 阔叶红松林, 太阳分光谱辐射

Abstract: Quantitative descriptions of N-inputs through fertilizer application,N-fixation,precipitation and irrigation and N-outputs through harvest,leaching,run off,denitrification,ammonia volatilization and direct loss from plant leaves are presented and analysed in reference to dealing with nitrogen cycling in modern agroecosystem.Asimplified approach has been suggested to establish the nitrogen balance model under certain soil conditions and agricultural practices.

Key words: Broadleaved Korean pine forest, Spectral solar radiation