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生态学杂志 ›› 1992, Vol. ›› Issue (2): 1-3,7.

• 研究报告 •    下一篇

京郊密云县农业生态系统氮素循环的数量特征研究

胡春胜1, 韩纯儒2   

  1. 1. 中国科学院石家庄农业现代化所, 050021;
    2. 北京农业大学, 100094
  • 收稿日期:1991-07-01 修回日期:1991-08-31 出版日期:1992-04-10

Quantitative Characteristics of Nitrogen Cycling in Agroecosystems of Miyun, Beijing

Hu Chunsheng1, Han Chunru2   

  1. 1. Institute of Agricultural Modernization, Academia Sinica, Shijiazhuang 050021;
    2. Beijing Agricultural University, 100094
  • Received:1991-07-01 Revised:1991-08-31 Online:1992-04-10

关键词: 农业生态系统, 能值, 演变, 湖南省

Abstract: Quantitative patterns and characteristics of nitrogen cycling in agroecosystems of Miyun county of Beijing suburb are studied and evaluated, Aseries of related parameters are obtained, and effective ways are suggested for improving the system and its nitrogen efficincy.

Key words: agro-ecosystem, emergy, evolution, Hunan Province