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为了在烟叶分级过程中准确把握烟叶的部位,选用曲靖地区K326品种的3个部位4个橘色等级共12个样品,分别对不同部位主脉的形态、单位长度的质量、颜色、力学性能等方面进行研究,采用图片和数据相结合的方法进行部位识别分析。结果表明:下部烟叶主脉闭合较直,叶面平坦,木质化程度较低,主脉较细、手感发软,主脉颜色浅黄或正黄,折断力小,主脉单位长度质量平均为0.066 g/cm,手感是“飘”的感觉。中部烟叶主脉半遮半露;叶面呈现油润状态;叶面皱褶,木质化程度较下部烟叶高,主脉粗细适中,主脉颜色深黄或浅棕褐色,折断力较大,主脉单位长度质量平均为0.104 g/cm,手感是“实”的感觉。上部烟叶主脉完全显露且主脉直,叶面皱褶有层叠,木质化程度高,主脉硬、较脆,主脉颜色黑色或黑褐色,折断力大,主脉单位长度质量平均为0.151 g/cm,手感是“沉”的感觉。
In order to accurately grasp the tobacco leaf during the grading process, Qujing region K326 varieties of three parts of 4 orange grade a total of 12 samples, respectively, different parts of the main vein morphology, the length of the unit mass, color, mechanical properties, etc. Research, using a combination of image and data for part identification analysis. The results showed that the lower part of the main vein closed more straight, leaf surface flat, low degree of lignification, the main vein is thin, soft hand, the main color is light yellow or yellow, the fracture force is small, the average length of the main vein unit mass was 0.066 g / cm, feel is “floating ” feeling. The main vein of the middle tobacco covered half of the half exposed; the foliage was in oily condition; the leaf folds and the lignification degree were higher than those in the lower leaves; the main vein was moderately thick; the main vein was dark yellow or light brown in color; Pulse unit length of the average mass of 0.104 g / cm, feel is “real ” feeling. The main vein of the upper part of the tobacco was completely exposed and the main veins straight, leaf folds layered, high degree of lignification, the main hard, crisp, the main vein color black or dark brown, breakage force, the average length of the main vein unit mass 0.151 g / cm, feel is “shen ” feeling.