摘要：為揭示烤煙B2F等級(jí)煙葉表面顏色的區(qū)域性差異，以2015年14個(gè)省份的B2F等級(jí)初烤煙葉為試驗(yàn)材料，采用多重比較和系統(tǒng)聚類(lèi)法，對(duì)煙葉樣品的表面顏色進(jìn)行量化分析。結(jié)果表明：（1）烤煙表面顏色空間分布特征：明度（L*）為 47.72～60.29；紅度（a*）為15.61～18.89；黃度（b*）為39.00～50.62；顏色飽和度（C*）為42.41～53.76。（2）烤煙B2F等級(jí)煙葉表面顏色具有較強(qiáng)的區(qū)域性差異：長(zhǎng)江中上游煙區(qū)的明度指數(shù)L*顯著高于西南煙區(qū)和東南煙區(qū)，東南煙區(qū)的明度指數(shù)L*顯著低于其它四大煙區(qū)，西南煙區(qū)紅度指數(shù)a*顯著高于東南、黃淮和北方煙區(qū)；長(zhǎng)江中上游煙區(qū)黃度指數(shù)b*和顏色飽和度指數(shù)C*均顯著高于東南、黃淮和北方煙區(qū)。（3）不同種植區(qū)烤煙B2F等級(jí)煙葉表面顏色特征可分為4類(lèi)，并呈現(xiàn)較強(qiáng)的區(qū)域特征：第一類(lèi)主要集中在黃淮和北方煙區(qū)，總體特征是煙葉表面顏色紅色特性較弱；第二類(lèi)主要集中在東南煙區(qū)，總體特征是煙葉表面明度較低，顯色暗淡，黃色特性弱，飽和度不夠。第三類(lèi)主要集中在西南煙區(qū)和重慶等產(chǎn)區(qū)，總體特征是煙葉表面紅色特性最為明顯。第四類(lèi)主要集中在四川涼山州和部分西南煙區(qū)，總體特征是煙葉表面顏色亮度較高，黃色顯性較好，顏色飽和度高。
　　關(guān)鍵詞：烤煙；B2F等級(jí)煙葉；表面顏色；區(qū)域性差異
　　中圖分類(lèi)號(hào)：S572.01 文獻(xiàn)標(biāo)識(shí)號(hào)：A 文章編號(hào)：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.

相關(guān)熱詞搜索：烤煙 煙葉 區(qū)域性 差異 表面