Correlation between physical properties of tobacco leaves and lamina structure

doi:10.16178/j.issn.0528-9017.20240696

Abstract

Abstract:

In order to improve lamina structure，tobacco leaf samples were analyzed by factor analysis and cluster analysis，to study the relationship between the physical properties of flue-cured tobacco leaves and lamina structure. The results showed that the overall trend of leaf density，softness，shear force，puncture force，adhesion force and thickness decreased gradually from upper leaves to lower leaves，and the mechanical properties of tobacco leaves from different producing areas and different grades were quite different. The leaf rate of >25.40 mm×25.40 mm and >12.70 mm×12.70 mm was significantly （p<0.05） or extremely significantly （p<0.01） correlated with thickness， leaf density， softness， shear force， adhesion， tensile force and puncture force， while the leaf rate of <2.36 mm×2.36 mm was negatively correlated with puncture force. The rate of stem content in leaves was significantly or extremely significantly positively correlated with the length，width，and stem content rate，and was extremely significantly negatively correlated with the tensile force and puncture force. Other physical indicators had no significant correlation with the lamina structure. The results of cluster analysis showed that tobacco leaf samples could be divided into 4 categories，and the comprehensive physical characteristics of the same category were relatively close. By setting different equipment parameters and grouping processing according to the category，the tobacco leaf crushing process could be reduced，and the lamina structure economic indexes of tobacco leaves with different physical characteristics were further optimized after beating and re-drying.

Key words: tobacco leaf, physical property, beating and redrying, lamina structure, correlation

CLC Number:

S572

WANG Yimin, GUO Jun, ZHU Zhiyin, PENG Dong, LIU Guosheng, SONG Zhiyong, LE Jiajie, JIANG Pinglin, LUO Xianhua, SHUAI Ming, JIAN Panfeng, GUO Yun, WU Yunjie, WEN Yongcai. Correlation between physical properties of tobacco leaves and lamina structure[J]. Journal of Zhejiang Agricultural Sciences, 2026, 67(4): 872-877.

Figures/Tables 6

References 17

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产区与等级	长度/cm	宽度/cm	单叶质量/g	厚度/mm	含梗率/%	叶面密度/（mg·m^-2）	柔软度/mN	剪切力/N	穿刺力/N	黏附力/N	拉力/N
永州B1F	65.11±4.12	17.21±2.37	7.21±1.82	98.41±8.79	27.65±3.13	6.32±1.79	55.54±22.67	19.45±3.24	1.45±0.15	4.54±1.12	2.92±0.67
永州B2F	68.27±4.33	18.31±2.67	6.99±1.91	118.32±9.76	25.20±3.07	6.90±1.72	59.67±20.33	21.47±3.11	1.76±0.12	4.22±1.65	3.46±0.48
永州B3F	65.31±4.87	16.57±2.55	8.77±1.92	103.25±9.41	31.39±2.87	6.73±1.65	60.25±16.27	18.39±3.02	1.52±0.22	4.32±1.01	3.12±0.61
衡阳X2F	60.32±5.28	22.19±2.98	4.09±1.43	77.35±16.13	33.21±1.98	3.25±1.24	22.67±10.34	11.65±2.65	1.19±0.43	3.36±0.54	1.83±0.34
衡阳B2F	67.01±5.52	20.51±2.66	8.52±1.45	107.32±14.68	24.49±1.82	6.98±1.35	71.67±15.56	22.22±2.57	1.62±0.37	4.09±2.65	2.84±0.49
郴州B1F	67.54±4.11	16.65±2.27	6.04±1.76	105.35±18.72	24.62±2.74	6.57±1.75	78.23±18.62	18.25±4.35	1.58±0.35	4.67±2.17	3.04±0.84
郴州B3F	67.97±4.02	17.31±2.17	6.20±1.62	111.74±19.68	25.47±2.34	6.87±1.61	84.34±26.64	19.16±3.67	1.67±0.31	4.36±2.11	3.12±0.76
衡阳C4F	65.32±5.87	25.32±2.61	7.54±1.66	91.64±15.31	24.64±2.03	5.15±1.31	30.35±12.36	16.58±2.13	1.33±0.44	5.05±1.57	2.01±0.55
衡阳C3F	70.32±4.73	27.82±2.51	8.49±1.51	93.35±14.35	30.77±2.09	5.23±1.28	43.78±11.57	16.96±2.01	1.37±0.40	4.58±2.65	2.21±0.72
衡阳C2F	67.31±4.82	24.27±2.32	11.77±1.53	96.31±14.28	27.26±1.88	5.52±1.24	55.24±13.26	17.66±1.87	1.26±0.42	4.86±1.41	2.29±0.83
永州C3F	62.31±4.25	26.12±2.64	9.76±1.94	85.56±8.97	35.66±3.22	4.35±1.59	30.67±10.32	16.55±2.84	1.46±0.22	5.76±1.38	2.34±0.62
永州C2F	67.31±4.87	19.54±2.71	11.32±1.89	95.67±10.34	31.89±3.11	4.74±1.51	28.38±11.74	17.26±3.97	1.40±0.25	5.07±2.67	2.40±0.82
郴州C3F	61.38±3.79	25.81±2.13	10.04±1.57	91.87±21.37	28.24±2.13	4.58±1.44	46.61±25.32	15.22±4.25	1.30±0.28	5.86±1.28	2.20±1.13
郴州C2F	64.31±3.12	25.19±1.87	11.00±1.23	100.61±20.74	31.58±2.24	4.86±1.38	38.41±23.27	14.45±4.12	1.41±0.24	6.19±1.71	2.56±1.02
郴州C4F	60.57±3.51	24.36±2.31	9.95±1.38	88.26±18.62	27.32±2.18	4.78±1.42	27.42±21.67	14.68±3.57	1.26±0.36	5.67±2.67	1.94±0.71

产区与等级	长度/cm	宽度/cm	单叶质量/g	厚度/mm	含梗率/%	叶面密度/（mg·m^-2）	柔软度/mN	剪切力/N	穿刺力/N	黏附力/N	拉力/N
永州B1F	65.11±4.12	17.21±2.37	7.21±1.82	98.41±8.79	27.65±3.13	6.32±1.79	55.54±22.67	19.45±3.24	1.45±0.15	4.54±1.12	2.92±0.67
永州B2F	68.27±4.33	18.31±2.67	6.99±1.91	118.32±9.76	25.20±3.07	6.90±1.72	59.67±20.33	21.47±3.11	1.76±0.12	4.22±1.65	3.46±0.48
永州B3F	65.31±4.87	16.57±2.55	8.77±1.92	103.25±9.41	31.39±2.87	6.73±1.65	60.25±16.27	18.39±3.02	1.52±0.22	4.32±1.01	3.12±0.61
衡阳X2F	60.32±5.28	22.19±2.98	4.09±1.43	77.35±16.13	33.21±1.98	3.25±1.24	22.67±10.34	11.65±2.65	1.19±0.43	3.36±0.54	1.83±0.34
衡阳B2F	67.01±5.52	20.51±2.66	8.52±1.45	107.32±14.68	24.49±1.82	6.98±1.35	71.67±15.56	22.22±2.57	1.62±0.37	4.09±2.65	2.84±0.49
郴州B1F	67.54±4.11	16.65±2.27	6.04±1.76	105.35±18.72	24.62±2.74	6.57±1.75	78.23±18.62	18.25±4.35	1.58±0.35	4.67±2.17	3.04±0.84
郴州B3F	67.97±4.02	17.31±2.17	6.20±1.62	111.74±19.68	25.47±2.34	6.87±1.61	84.34±26.64	19.16±3.67	1.67±0.31	4.36±2.11	3.12±0.76
衡阳C4F	65.32±5.87	25.32±2.61	7.54±1.66	91.64±15.31	24.64±2.03	5.15±1.31	30.35±12.36	16.58±2.13	1.33±0.44	5.05±1.57	2.01±0.55
衡阳C3F	70.32±4.73	27.82±2.51	8.49±1.51	93.35±14.35	30.77±2.09	5.23±1.28	43.78±11.57	16.96±2.01	1.37±0.40	4.58±2.65	2.21±0.72
衡阳C2F	67.31±4.82	24.27±2.32	11.77±1.53	96.31±14.28	27.26±1.88	5.52±1.24	55.24±13.26	17.66±1.87	1.26±0.42	4.86±1.41	2.29±0.83
永州C3F	62.31±4.25	26.12±2.64	9.76±1.94	85.56±8.97	35.66±3.22	4.35±1.59	30.67±10.32	16.55±2.84	1.46±0.22	5.76±1.38	2.34±0.62
永州C2F	67.31±4.87	19.54±2.71	11.32±1.89	95.67±10.34	31.89±3.11	4.74±1.51	28.38±11.74	17.26±3.97	1.40±0.25	5.07±2.67	2.40±0.82
郴州C3F	61.38±3.79	25.81±2.13	10.04±1.57	91.87±21.37	28.24±2.13	4.58±1.44	46.61±25.32	15.22±4.25	1.30±0.28	5.86±1.28	2.20±1.13
郴州C2F	64.31±3.12	25.19±1.87	11.00±1.23	100.61±20.74	31.58±2.24	4.86±1.38	38.41±23.27	14.45±4.12	1.41±0.24	6.19±1.71	2.56±1.02
郴州C4F	60.57±3.51	24.36±2.31	9.95±1.38	88.26±18.62	27.32±2.18	4.78±1.42	27.42±21.67	14.68±3.57	1.26±0.36	5.67±2.67	1.94±0.71

指标	长度	宽度	单叶质量	厚度	含梗率	叶面密度	柔软度	剪切力	穿刺力	黏附力	拉力
>25.40 mm×25.40 mm的叶片率	0.103	0.034	0.054	0.407^**	0.078	0.429^*	0.413^**	0.497^**	-0.673^**	0.644^**	-0.461^**
>12.70 mm×12.70 mm的叶片率	0.132	0.046	0.085	0.503^**	0.109	0.358^*	0.406^**	0.553^**	0.561^**	0.528^**	0.486^**
<2.36 mm×2.36 mm的叶片率	-0.047	-0.095	-0.098	-0.224	0.090	-0.372	0.125	-0.359	-0.396^*	0.089	-0.231
叶中含梗率	0.403^*	0.286^*	0.122	0.021	0.761^**	0.134	0.079	0.081	-0.461^**	0.102	-0.341^**

指标	长度	宽度	单叶质量	厚度	含梗率	叶面密度	柔软度	剪切力	穿刺力	黏附力	拉力
>25.40 mm×25.40 mm的叶片率	0.103	0.034	0.054	0.407^**	0.078	0.429^*	0.413^**	0.497^**	-0.673^**	0.644^**	-0.461^**
>12.70 mm×12.70 mm的叶片率	0.132	0.046	0.085	0.503^**	0.109	0.358^*	0.406^**	0.553^**	0.561^**	0.528^**	0.486^**
<2.36 mm×2.36 mm的叶片率	-0.047	-0.095	-0.098	-0.224	0.090	-0.372	0.125	-0.359	-0.396^*	0.089	-0.231
叶中含梗率	0.403^*	0.286^*	0.122	0.021	0.761^**	0.134	0.079	0.081	-0.461^**	0.102	-0.341^**

主成分	特征值	方差贡献率/%	累计方差贡献率/%
f₁	4.46	34.15	34.15
f₂	2.03	20.43	54.58
f₃	1.89	18.32	72.90
f₄	1.78	12.35	85.25