| In order to effectively reduce the influences of subjective factors, entropy weight coefficient method was applied to build evaluation model of soil fertility . A comprehensive consideration of the influence of every factor on the soil fertility, the weight value of evaluation index was calculated by entropy, and the soil fertility's comprehensive index value was obtained.By comparing and analyzing the comprehensive index value, it obtained that grade of soil fertility and the degree of closeness of measured value. Authors compared 98 groups of data by different methods of evaluation (entropy weight coefficient method and the other methods ), and evaluation results of 94 groups of data were consistent. The results showed that entropy weight coefficient method had high accuracy,and it reduce the influences of subjective factors. Demonstration analysis indicates that the evaluation method is simple and feasible, its results accords with actual conditions. |
