| By using the grey relational model, 14 indexes of ecological agricultural development in Sichuan Province from 1997 to 2008 are analyzed. According to the relational degree results, the ecological agricultural development in 12 years can be divided into three stages: the first stage is from 1997 to 2000, with the shape of inverted U; the second stage is from 2001 to 2004, belonging to transition stage with slow growth rate; the third stage is from 2005 to 2008,belonging to the stage of rapid growth. It draws conclusion that per capita grain yield is an important element for evaluating ecological agricultural construction. Besides, reducing the energy consumption of per unit production, improving labor productivity and increasing agricultural science and... |
