PROGRESS IN GEOGRAPHY ›› 1998, Vol. 17 ›› Issue (4): 35-40.doi: 10.11820/dlkxjz.1998.04.005

• Original Articles • Previous Articles     Next Articles

EVALUATION AND ANALYSIS OF ENERGY CHANGE RATIO IN MODERN PLANTING EXAMPLE IN LUANCHENG COUNTY, HEBEI PROVINCE

Feng zhiming, Liu Aimin   

  1. Commission for Integrated Survey of Natural Resources, Chinese Academy of Sciences, Beijing 100101
  • Received:1998-07-01 Online:1998-12-24 Published:1998-12-24

Abstract: Energy change ratio is a synthetical index to evaluate the utilization efficiency of agricultural resources. Based on analyses of the characteristics of modern planting system, this paper discusses the characteristics of input and production in modern planting system in Luancheng County, Hebei Province. Result of analyzing energy flow indicates that, after 1990’s, as the input of artificial auxiliary energy, especially the industry auxiliary energy, was increased, energy result in system has been decreased. Improving the production construction and the input construction in system, using modern organism technology and engineer technology, and increasing utilization ratio on agricultural resources are keys to achieve sustainable development of modern agriculture.

Key words: agricultural resources, energy result, modern agriculture, utilization ratio

CLC Number: 

  • F30