王改丽++甄焕菊++李悦++魏春阳++郑宪滨++于建军

摘要：为揭示烤烟C3F等级烟叶表面颜色的区域性差异，以2015年14个省份的C3F等级初烤烟叶为试材，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 47.90～63.77；红度（a*）为14.12～15.56；黄度（b*）为39.91～53.52；颜色饱和度（C*）为42.07～55.73。②烤烟C3F等级烟叶表面颜色具有较强的区域性差异：长江中上游和西南烟区的黄度b*和颜色饱和度C*均显著高于东南烟区；黄淮和北方烟区烤烟C3F等级烟叶表面颜色特征参数较为相近，均没有显著性差异。③烤烟C3F等级烟叶表面颜色区域性差异形成的重要原因是生态条件差异所致，品种对其影响较小。④烤烟C3F等级烟叶表面颜色特征可分为四类，并呈现较强的区域特征分布。

关键词：烤烟；C3F等级烟叶；颜色；区域特征

中图分类号：S572.01文献标识号：A文章编号：1001-4942（2017）06-0021-05

Abstract In order to reveal the surface color regional disparity of C3F grade tobacco leaves，using the C3F grade cured tobacco leaves from 14 provinces in 2015 as the experimental materials，the surface color of tobacco leaf samples were quantitatively analyzed by the methods of multiple comparison and system clustering. The results were as follows. The surface color spatial distribution features of the flue-cured tobacco showed that the brightness （L*） was 47.90～63.77， the red degrees （a*） was 14.12～15.56， the yellow degree （b*） was 39.91～53.52， and the color saturation （C*） was 42.07～55.73. There were strong regional differences in C3F grade flue-cured tobacco leaf surface color. The b* and C* of upper-middle reaches of Yangtze river and Southwest tobacco areas were significantly higher than that of Southeast tobacco areas. There were no significant differences in C3F grade tobacco leaf surface color feature parameters in Huanghuai and North tobacco areas. The ecological condition was the important reason for formation of C3F grade flue-cured tobacco leaf surface color regional differences， and variety had the small effects.

KeywordsFlue-cured tobacco； C3F grade tobacco leaf； Color； Regional characteristics

烟叶的外观特性主要是依靠人们眼看、手摸等感官做出的主观判断，是目前烟叶分级的主要依据[1]。烤后烟叶的表面颜色是影响烟叶外观质量的主要因素[2]，与烟叶品质密切相关[3-5]。由于生态环境条件、栽培调制技术和品种的差异，烤后烟叶颜色表现不同[6，7]。〖HJ*4/9〗同一产地的烤烟受品种、成熟度、部位等影响，在颜色呈现上也存在一定的差异性[8-10]。基于分光光谱仪测定L*、a*、b*和C*颜色空间分布参数的研究，在烟草、木板、纺织等行业得到了广泛应用[11-13]。烤烟颜色主要由光泽强度、颜色饱和度及均匀程度共同呈现[14]，但是有关烤烟颜色与L*、a*、b*和C*特征参数相关性的研究较少。……