摘要
为了减少主观因素的干扰,利用熵权系数法建立土壤肥力的评价模型;综合考虑土壤肥力中各因素提供的信息,通过熵的理论,计算各评价指标的权值,得到肥力评价的综合指标值;将得到的综合指标值进行对比排序,不仅得到土壤肥力的等级,也可以看出与标准等级的接近程度大小;在同等条件下与其他土壤肥力评价方法相比较,用98个地块土样测试数据进行验证,其中94个地块的肥力评定是一致的,可以看出熵权系数法的评定结果准确度较高,由于引入了熵,可以避免主观因素的干扰。实例分析表明,该评价方法简单易行,评价结果符合实际情况。
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.
出处
《广东农业科学》
CAS
CSCD
北大核心
2013年第15期200-202,217,共4页
Guangdong Agricultural Sciences
基金
国家"863"计划项目(2006AA10A039)
国家公益性行业(农业)科研专项经费(200803037)
吉林省科技发展计划项目(2006BAD02A10-6-6)
关键词
熵权系数法
土壤肥力
熵
评价模型
entropy weight coefficient method
soil fertility
entropy
evaluation model
