烤烟B2F等级烟叶表面颜色区域性差异分析?

　　摘要：為揭示烤烟B2F等级烟叶表面颜色的区域性差异，以2015年14个省份的B2F等级初烤烟叶为试验材料，采用多重比较和系统聚类法，对烟叶样品的表面颜色进行量化分析。结果表明：（1）烤烟表面颜色空间分布特征：明度（L*）为 47.72～60.29；红度（a*）为15.61～18.89；黄度（b*）为39.00～50.62；颜色饱和度（C*）为42.41～53.76。（2）烤烟B2F等级烟叶表面颜色具有较强的区域性差异：长江中上游烟区的明度指数L*显著高于西南烟区和东南烟区，东南烟区的明度指数L*显著低于其它四大烟区，西南烟区红度指数a*显著高于东南、黄淮和北方烟区；长江中上游烟区黄度指数b*和颜色饱和度指数C*均显著高于东南、黄淮和北方烟区。（3）不同种植区烤烟B2F等级烟叶表面颜色特征可分为4类，并呈现较强的区域特征：第一类主要集中在黄淮和北方烟区，总体特征是烟叶表面颜色红色特性较弱；第二类主要集中在东南烟区，总体特征是烟叶表面明度较低，显色暗淡，黄色特性弱，饱和度不够。第三类主要集中在西南烟区和重庆等产区，总体特征是烟叶表面红色特性最为明显。第四类主要集中在四川凉山州和部分西南烟区，总体特征是烟叶表面颜色亮度较高，黄色显性较好，颜色饱和度高。
　　关键词：烤烟；B2F等级烟叶；表面颜色；区域性差异
　　中图分类号：S572.01 文献标识号：A 文章编号：1001-4942（2017）04-0015-06
　　Regional Diversity Analysis of Grade B2F
　　Flue-Cured Tobacco Surface Color
　　Wang Gaili1， Yu Jianjun2， Zheng Xianbin1， Wei Chunyang1， Li Yue2，Hu Jianjun1， Zhen Huanju1
　　（1. College of Staff Further Education， China National Tobacco Corporation， Zhengzhou 450008， China；
　　2. Tobacco College， Henan Agricultural University， Zhengzhou 450002， China）
　　Abstract In order to reveal the regional disparities of surface color of grade B2F flue-cured tobacco， the grade B2F flue-cured tobacco leaves from 14 provinces in 2015 were used as experimental materials. Using the methods of multiple comparison and system clustering， the surface color of tobacco leaves was quantitatively analyzed. The results showed that： （1） the spatial distribution features of flue-cured tobacco surface color were brightness （L*） as 47.72～60.29， red degree （a*） as 15.61～18.89， yellow degree （b*） as 39.00～50.62， color saturation （C*） as 42.41～53.76. （2） There were strong regional differences in leaf surface color of grade B2F flue-cured tobacco. The brightness （L*） of tobacco leaves from the upper-middle reaches of Yangtze River was significantly higher than that from the Southeast and the Southwest areas， and that from the Southeast area was significantly lower than that from the other four areas. The red degrees （a*） of tobacco leaves from the Southwest area was significantly higher than that of the Southeast，the Huanghuai and the North areas. The yellow degree （b*） and color saturation （C*） of leaves from the upper-middle reaches of Yangtze River were significantly higher than those from the Southeast，the Huanghuai and the North areas. （3） The characteristics of grade B2F tobacco leaf surface color could be classified into four types， and showed stronger regional diversity. The first type was mainly centralized in the Huanghuai and the North areas showing weaker red degree. The second type was centralized in the Southeast area showing lower brightness， yellow degree and saturation. The third type was centralized in the Southwest area and Chongqing region showing the most obvious red degree. The fourth type was centralized in Liangshan Prefecture of Sichuan Province and part of the Southwest area showing higher brightness， yellow degree and saturation.

相关热词搜索：烤烟 烟叶 区域性 差异 表面