不同叶片结构对烤烟干鲜比及收缩率的影响OA
Effects of Different Leaf Structures on the Dry-fresh Weight Ratio and Shrinkage Rate of Flue-cured Tobacco
为探讨不同叶片结构对烤烟干鲜比及收缩率的影响,以贵州省黔南烟区烤烟品种K326为试验材料,测定中部、上二棚和顶叶等不同部位烟叶在不同叶片结构(疏松、尚疏松、稍密)下的鲜叶重、干叶重、叶面积和烤后面积,计算干鲜比与收缩率.结果表明,随着叶片结构由疏松、尚疏松向稍密变化,干鲜比呈显著升高趋势,疏松结构烟叶干鲜比最低(0.167 0),稍密结构烟叶干鲜比最高(0.239 1);收缩率则呈显著下降趋势,疏松结构烟叶收缩率最高(72.30％),表明烘烤后叶面积收缩幅度最小、形态保持最好,尚疏松结构次之(68.29％),稍密结构收缩率最低(59.47％),收缩幅度最大.相关性分析均表明,干鲜比与收缩率、收缩率与叶片结构呈极显著负相关,干鲜比与叶片结构呈极显著正相关;尚疏松组和稍密组内干鲜比与收缩率分别呈极显著、显著负相关,疏松组内相关趋势不显著.上述结果表明,较疏松的叶片结构有利于降低干鲜比、提高收缩率、减缓烘烤后叶面积收缩幅度,有利于保持烟叶物理形态和外观质量,可为烤烟烘烤工艺优化和田间栽培管理提供理论依据.
To investigate the effects of different leaf structures on the dry-fresh weight ratio and shrinkage rate of flue-cured tobacco,flue-cured tobacco variety K326 from the Qiannan tobacco growing area of Guizhou Province was used as the experi-mental material.Fresh leaf weight,dry leaf weight,leaf area,and post-curing leaf area were measured for tobacco leaves from different positions(middle leaf,upper second leaf,and top leaf)under different leaf structures(loose,moderately loose,and slightly compact).The dry-fresh weight ratio and shrinkage rate were calculated.The results showed that as leaf struc-ture changed from loose to moderately loose to slightly compact,the dry-fresh weight ratio exhibited a significant increasing trend,with the loose structure having the lowest dry-fresh weight ratio(0.167 0)and the slightly compact structure having the highest(0.239 1).In contrast,the shrinkage rate showed a significant decreasing trend,with the loose structure exhibiting the highest shrinkage rate(72.30％),indicating the smallest post-curing leaf area reduction and the best morphological retention,followed by the moderately loose structure(68.29％),and the slightly compact structure having the lowest shrinkage rate(59.47％)with the largest reduction in leaf area.Correlation analysis revealed that the dry-fresh weight ratio and shrinkage rate,as well as shrinkage rate and leaf structure,showed highly significant negative correlations,while the dry-fresh weight ratio and leaf structure showed a highly significant positive correlation.Within the moderately loose group and the slightly compact group,the dry-fresh weight ratio and shrinkage rate showed highly significant and significant negative correlations,respectively,whereas no significant correlation trend was observed within the loose group.These results indicated that a looser leaf structure is beneficial for reducing the dry-fresh weight ratio,increasing the shrinkage rate,alleviating post-curing leaf area reduction,and maintaining the physical morphology and appearance quality of tobacco leaves,providing a theoretical basis for optimizing curing techniques and field cultivation management of flue-cured tobacco.
吴霞;蒙骏;张刚领;韦斌;张西仲;王庆;唐小洋;何孝磊
贵州省烟草公司黔南州公司,贵州都匀 558000贵州省烟草公司黔南州公司,贵州都匀 558000贵州省烟草公司黔南州公司,贵州都匀 558000贵州省烟草公司,贵阳 550000贵州省烟草公司黔南州公司,贵州都匀 558000贵州省烟草公司黔南州公司,贵州都匀 558000贵州省烟草公司黔南州公司,贵州都匀 558000贵州省烟草公司黔南州公司,贵州都匀 558000
农业科技
烤烟叶片结构干鲜比收缩率部位特征
flue-cured tobaccoleaf structuredry-fresh weight ratioshrinkage ratepositional characteristics
《耕作与栽培》 2026 (5)
28-32,5
基于"贵烟"品牌配方模块的烟叶"分选收"流程一体化研究与应用(2025XM07)
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