采收成熟度对烤烟叶片特征的影响  

Effect of Growth Period on Appearance Characteristics of Flue-cured Tobaccos

作　　者：王利祥 WANG Li-xiang(Wushan Branch of Chongqing Tobacco Company,Chongqing 404700)

机构地区：[1]重庆市烟草公司巫山分公司,重庆404700

出　　处：《安徽农业科学》2022年第2期38-41,共4页Journal of Anhui Agricultural Sciences

基　　金：中国烟草总公司重庆市公司资助项目(NY20180401070005)。

摘　　要：[目的]探究不同采收成熟度对烤烟叶片特征的影响,为烟叶适时采收提供判断指标和科学依据。[方法]以云烟116和云烟87为试验材料,根据不同采收时间,对其外观特征影响因素进行测定,主要包括SPAD值、叶片成熟区域、叶形等。[结果]随着采收时间延长,烟叶SPAD值逐渐降低,叶绿素降解速度逐渐增加,在烟叶达到成熟后逐渐降低;烟叶叶片成熟区域从以尚熟区域为主转变为以适熟区域为主,转变速度逐渐减小;叶长和叶宽整体呈增加趋势,在烟叶达到成熟后,两者有减小的趋势,烟叶的长宽比、叶宽最大处占叶长的比例与烟叶叶长显著相关。[结论]下部叶在打顶后24~31 d采收,中部叶在打顶后32~39 d采收,上部叶在打顶后47~54 d采收,烟叶的外观特征更符合优质烟叶标准。[Objective]To explore the effects of different harvest time on the appearance characteristics of tobacco leaves,so as to provide judgment index and scientific basis for timely harvest of tobacco leaves.[Method]Yunyan 116 and Yunyan 87 were used as experimental materials.According to different harvest time,the influencing factors of their appearance characteristics were determined,including SPAD value,leaf mature area,leaf shape and so on.[Result]With the extension of harvest time,SPAD value of tobacco leaves decreased gradually,chlorophyll degradation rate increased gradually,and decreased gradually after tobacco leaves reached maturity;The mature area of tobacco leaves changed from mature area to suitable mature area,and the transformation rate decreased gradually;Leaf length and leaf width showed an increasing trend as a whole,and both showed a decreasing trend when tobacco leaves reached maturity.The ratio of length to width and the proportion of the largest leaf width to leaf length were significantly correlated with leaf length.[Conclusion]The lower leaves were harvested 24-31 days after topping,the middle leaves were harvested 32-39 days after topping,and the upper leaves were harvested 47-54 days after topping.

关 键 词：采收时间 外观特征 成熟区域 叶形 

分 类 号：S572[农业科学—烟草工业]