Analysis and Correlation Study of Conventional Chemical Components of Tobacco Leaves in Changsha Tobacco Area

doi:10.11924/j.issn.1000-6850.casb2024-0506

Abstract

Abstract:

The content status and changing trend of conventional chemical components of tobacco leaves in Changsha tobacco area were evaluated and analyzed to provide reference for the rational distribution and quality improvement of tobacco production in this area. From 2020 to 2023, 370 tobacco samples were collected from 20 representative monitoring sites of Liuyang and Ningxiang tobacco planting units in Changsha tobacco area, and the contents of conventional chemical components were statistically analyzed. The results showed that except for slightly higher total sugar (26.14%) and lower total nitrogen (1.39%), the average contents of reducing sugar, nicotine, chlorine and potassium in the Changsha tobacco area were all within the appropriate range of high quality tobacco leaves. The main derivative indexes, the ratio of sugar to nicotine, nitrogen to nicotine, and potassium to chlorine also met the standard of high quality tobacco leaves. According to the analysis of different monitoring sites of tobacco planting units, the total sugar content should be controlled in Liuyang tobacco area and the total nitrogen content should be increased in Ningxiang tobacco area. According to the analysis of different parts of tobacco leaves, the total sugar and the ratio of sugar to nicotine in middle tobacco leaves were higher, and the total nitrogen in upper and middle tobacco leaves was lower. According to the analysis of different years, the ratio of total sugar and sugar to nicotine increased year by year, while the ratio of nicotine and potassium to chlorine decreased year by year, and other component indexes fluctuated from year to year. According to the analysis of different varieties, the total sugar of ‘Xiangyan 7’ and ‘G80’ were higher, and the total nitrogen content of ‘Xiangyan 7’, ‘Yunyan 87’ and ‘G80’ were lower. According to the correlation coefficient analysis of conventional chemical components, except for the ratio of total sugar, reducing sugar and sugar to nicotine, total sugar and total nitrogen, potassium and the ratio of potassium to chlorine, the others reached a very significant level. To sum up, the overall quality of the tobacco leaves in Changsha tobacco area is better, but attention should be paid to controlling the total sugar content of tobacco leaves in the central part of Liuyang tobacco area and to improving the total nitrogen content of the middle and upper tobacco leaves in Ningxiang tobacco area. The quality of ‘Yunyan 87’ performs better in Changsha tobacco-growing area.

Key words: tobacco-growing area of Changsha, tobacco leaf, conventional chemical components, quality, variety, correlation analysis

ZHONG Yuefeng, LIU Qiongfeng, ZHAO Ajuan, CHEN Ge, GU Yu, ZHOU Shimin, ZHAI Zhengguang, DUAN Meizhen, LIU Liangjiao, LONG Dabin, CHEN Pengfeng, PENG Mengxiang, YUE Lunyong, HE Jiguang, XIE Yangjun, ZHENG Huiyan, HE Qiangfeng, WU Haiyong, ZHOU Junyu, LI Wei. Analysis and Correlation Study of Conventional Chemical Components of Tobacco Leaves in Changsha Tobacco Area[J]. Chinese Agricultural Science Bulletin, 2024, 40(31): 126-132.

Figures/Tables 7

References 29

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化学成分	适值范围	化学成分	适值范围	化学成分	适值范围
总糖/%	18~26	总氮/%	1.5~3.0	糖碱比	8~12
还原糖/%	16~24	氯/%	≤1	氮碱比	≤1
烟碱/%	1.5~3.5	钾/%	2.0~3.5	钾氯比	≥4

化学成分	适值范围	化学成分	适值范围	化学成分	适值范围
总糖/%	18~26	总氮/%	1.5~3.0	糖碱比	8~12
还原糖/%	16~24	氯/%	≤1	氮碱比	≤1
烟碱/%	1.5~3.5	钾/%	2.0~3.5	钾氯比	≥4

统计指标	总糖/%	还原糖/%	烟碱/%	总氮/%	氯/%	钾/%	糖碱比	氮碱比	钾氯比
平均值	26.14	21.99	2.42	1.39	0.48	2.21	11.68	0.62	6.03
最小值	11.58	10.29	0.50	0.61	0.06	1.18	5.28	0.28	1.81
最大值	42.48	35.30	4.25	3.36	1.34	4.80	34.51	2.29	24.17
标准差	5.32	4.16	0.71	0.39	0.28	0.60	3.86	0.26	3.42
偏度系数	0.35	-0.60	0.04	0.45	0.90	0.89	1.46	2.51	1.83
峰度系数	0.10	0.30	0.19	1.84	0.24	1.52	4.89	11.41	4.97
变异系数/%	20.34	18.90	29.27	27.77	57.81	27.05	33.07	41.65	56.64

统计指标	总糖/%	还原糖/%	烟碱/%	总氮/%	氯/%	钾/%	糖碱比	氮碱比	钾氯比
平均值	26.14	21.99	2.42	1.39	0.48	2.21	11.68	0.62	6.03
最小值	11.58	10.29	0.50	0.61	0.06	1.18	5.28	0.28	1.81
最大值	42.48	35.30	4.25	3.36	1.34	4.80	34.51	2.29	24.17
标准差	5.32	4.16	0.71	0.39	0.28	0.60	3.86	0.26	3.42
偏度系数	0.35	-0.60	0.04	0.45	0.90	0.89	1.46	2.51	1.83
峰度系数	0.10	0.30	0.19	1.84	0.24	1.52	4.89	11.41	4.97
变异系数/%	20.34	18.90	29.27	27.77	57.81	27.05	33.07	41.65	56.64

烟区	监测点	总糖/%	还原糖/%	烟碱/%	总氮/%	氯/%	钾/%	糖碱比	氮碱比	钾氯比
浏阳	永安	27.93a	23.49a	2.73a	1.53a	0.62a	2.40a	10.69c	0.57a	4.45d
	沙市	28.38a	23.58a	2.71a	1.48a	0.61a	2.37a	10.86c	0.58a	4.98cd
	官渡	26.70ab	22.16a	2.57a	1.44a	0.46a	2.29a	10.91bc	0.59a	6.07bc
	平均值	27.78Aa	23.16Aa	2.68Aa	1.49Aa	0.58Aa	2.36Aa	10.82Ab	0.58Aa	5.12Bb
宁乡	大屯营	20.93d	17.67b	1.96a	1.14a	0.27a	1.87a	13.19a	0.74a	9.29a
	横市	24.94bc	21.34a	2.16a	1.30a	0.42a	2.17a	12.52a	0.64a	6.35b
	喻家坳	25.56bc	21.76a	2.15a	1.33a	0.36a	2.09a	12.50ab	0.65a	6.58b
	流沙河	23.84c	20.69ab	1.97a	1.22a	0.35a	1.88a	13.37a	0.67a	6.96b
	平均值	23.81Bb	20.35Ab	2.06Ab	1.25Aa	0.35Ab	2.00Aa	12.89Aa	0.67Aa	7.32Aa