不同成土母岩类型与烤烟化学成分的灰关联聚类分析评价

Grey Correlation Clustering Analysis and Evaluation between Different Parent Rock Type and Flue-cured Tobacco Chemical Composition

为了比较贵州省毕节烟区不同成土母岩间烤烟化学成分的差异,采用灰色关联聚类和决策分析方法,对149份烟叶样品(C3F等级)10个化学成分指标进行了综合评价。结果表明:根据烤烟化学成分的差异,16种不同成土母岩可分为4个类别:黄砂岩类、白云岩类(包括紫红泥岩、紫红砂岩、紫色砂岩、泥岩、白云岩、砂页岩夹煤层、玄武岩)、第四纪红色黏土类(包括第四纪红色黏土、紫色砂页岩、黄色砂页岩、泥页岩、砂页岩、石灰岩和石英砂岩)和白云质灰岩类(包括白云质灰岩)。各类烤烟化学成分的综合表现为:黄砂岩类表现最优,综合评价值为0.92;白云岩类次之,综合评价值为0.65;第四纪红色黏土类和白云质灰岩类相对较低,综合评价值分别为0.54和0.52。

In order to compare the difference of flue-cured tobacco chemical composition on different soil parent rock in Bijie tobacco zone, we used grey relation clustering and decision to comprehensively evaluate 10 chemical compositions of 149 tobacco leaf samples. The results showed that 16 kinds of soil parent rock were divided into 4categories: yellow sandstone class(i.e. yellow sandstone), dolomite class(i.e. purple mudstone, fuchsia sandstone,purple sandstone, mudstone, dolomite, sand shale clip of coal seam, and basalt), quaternary red clay class(i.e.quaternary red clay, purple sand shale, yellow sand shale, mud shale, sand shale, limestone and quartz sandstone) and dolomitic limestone class(i.e. dolomitic limestone). The combined characteristics of chemical compositions of all kinds of flue-cured tobacco were as follows: the yellow sandstone was best, and its comprehensive evaluation value was 0.92;the dolomite was secondary with value of 0.65; the quaternary red clay and dolomitic limestone were characteristic of lower quality with values of 0.54 and 0.52, respectively.