马铃薯病虫害发生程度综合指标的确定

目前马铃薯病虫害统计汇总资料,缺乏多种病虫害发生程度的综合指标,影响了资料的科学性、可比性和应用价值。为此,我们利用西吉县10年统计资料,采用Fuzzy向量综合Ⅰ、Fuzzy综合评判Ⅱ、Ⅲ法,对马铃薯主要病虫害发生程度综合指标进行了比较确定。结果表明:以方法Ⅰ为固定样本,与方法Ⅱ、Ⅲ比较,其符合率100%,相关系数极显著;方法Ⅰ具有计算简便等优点,可为植保专业基础数据的统计标准化和防治决策提供了科学依据。

Determination of Comprehensive Indexes in Occurrence Degree of Potato Insects and Diseases

Little is known about comprehensive indexes in occurrenc e degree of potato insects and diseases in its statistic data,which influences scientificalness,comparability and applied value of the data.For this reason,based on the statistic data of Xiji county collected in ten years,Fuzzy vectors synthesis technique Ⅰ,Fuzzy comprehensive evaluation methodⅡand Ⅲ were used to investigate the comprehensive indexes in the occurrence degree of the potato insects and diseases.These results indicated that when the method I was as a fixed sample and compared with method II and III,the correlation coefficients were significant,with coincidence rate of 100%;the method Ⅰhad many characteristics,such as simple calculation,which could be used as the basis for standardizing on basic statistic data of plant protection.