耕作与栽培2026，Vol.46Issue(5)：28-32,5.
不同叶片结构对烤烟干鲜比及收缩率的影响
Effects of Different Leaf Structures on the Dry-fresh Weight Ratio and Shrinkage Rate of Flue-cured Tobacco
摘要
Abstract
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.关键词
烤烟/叶片结构/干鲜比/收缩率/部位特征Key words
flue-cured tobacco/leaf structure/dry-fresh weight ratio/shrinkage rate/positional characteristics分类
农业科技引用本文复制引用
吴霞,蒙骏,张刚领,韦斌,张西仲,王庆,唐小洋,何孝磊..不同叶片结构对烤烟干鲜比及收缩率的影响[J].耕作与栽培,2026,46(5):28-32,5.基金项目
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) （2025XM07）
