欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志 ›› 1993, Vol. ›› Issue (6): 37-40.

• 研究报告 • 上一篇    下一篇

河西走廊农户生态系统农田能流和物流数量特征的研究

李发弟   

  1. 甘肃农业大学畜牧系, 兰州730070
  • 收稿日期:1992-06-01 出版日期:1993-12-10

Quantintive Characteristics of Energy Flow and Nutrient Cycling of Farmland in a Farm Ecosystem in Hexi Corridor

Li Fadi   

  1. Department of Animal Husbandry Gansu Agricultural Unitversity
  • Received:1992-06-01 Online:1993-12-10

关键词: 大穗型小麦, 产量, 光合特性

Abstract: Quantitative characteristics of energy flow and nutrient cycling of farmland subsystem in a farm ecosys-tem in Hexi Corridor were studied.The results showed that the deflree of opening,input and output were high,the ratio of output to input of subsidy energy,nitrogen and phosphorus of the farmland subsystem was 3.11,0.79 and 0.49 respectively.

Key words: big-spike wheat, yield, photosynthetic characteristics.