Abstract: This paper is aimed at applying the eco-economic theory to the agricultural practices, and the principles and methods to build an index system which will estimate the productivity of agricultural eco-economic system were investigated. Aseries of indices (including six integrated indices) are established. The author calculates these indices in several agricultural eco-economic systems and sets up some standard values to correctly estimate our objective system. According to comparasive research, some results to Qutou Farm can be shown: 1) Its productivity is much lower than standard values. 2) There are significant differences in productivities among all parts of the farm. 3) The farm's productivity has been pacing up and down for a long time.

Key words: Agricultural eco-economic system, Productivity, Index system