Economical, portable and efficient grading method for maturity of fresh tobacco leaves of flue-cured tobaccos

Abstract

The invention discloses an economical, portable and efficient grading method for maturity of fresh tobacco leaves of flue-cured tobaccos. The grading method comprises the following steps: evaluating to-be-tested tobacco leaves, wherein the evaluation content comprises visual inspection on botanical characters of the tobacco leaves, and detection on the content of chlorophyll a and carotenoid of the tobacco leaves, if the evaluation result reaches the corresponding index, judging into corresponding maturity grade; and picking up the tobacco leaves of which the maturity grade accords with the requirements according to the individual requirements. According to the method, by combination of the content detection on the chlorophyll a and carotenoid in the tobacco leaves and the visual inspection of the appearance characteristics of the tobacco leaves, a characteristic grading index is provided for the flue-cured tobacco varieties with faint scent tobacco leaf in three southwest tobacco-growing areas of K326, honghua dajinyuan (Chinese character) and Yunnan tobacco 87; grading of the maturity of fresh tobacco leaves is carried out by adopting the method; supply of reasonable choice for scientifically harvesting the ripen tobacco leaves with different varieties and full play of genetic potential of variety and quality are facilitated; the aromatic style of the fainted scent tobacco leaves is strengthened; the smoking quality of the tobacco leaves is improved; and the grading method is especially suitable for popularization and application in the fainted scent tobacco leaf planting areas in the southwest tobacco-growing areas.

Description

technical field

[0001] The invention belongs to the technical field of maturity classification of tobacco leaves, and in particular relates to an economical, convenient and efficient method for grading the maturity of fresh flue-cured tobacco leaves. Background technique

[0002] Tobacco leaf production is the foundation of the cigarette industry, and the quality of tobacco leaves plays a decisive role in the quality of cigarettes. Tobacco leaf maturity is the first factor that determines the quality of flue-cured tobacco. The maturity of fresh tobacco leaves is divided into physiological maturity and technological maturity. When the leaf grows to its final size and the accumulation of dry matter in the leaf reaches its maximum value, it reaches physiological maturity, so it is called physiological maturity. Tobacco leaves that have reached physiological maturity are scientifically modulated after harvesting, and the yield is the highest, but from the perspective of qualit...

Examples

Embodiment 1

[0027] Experimental site: Stone Forest Base of Kunming Tobacco Company, Kunming, Yunnan

[0028] Experimental object: Safflower Dajinyuan Tobacco Leaves

[0029] Grading method:

[0030] (1) Visually inspect the botanical properties of the tobacco leaves: the leaf age of the lower leaves is 60-70 days, or 7-10 days after topping; the leaf age of the middle leaves is 70-80 days, or 20-30 days after topping; The leaf age is 80-90 days, or 40-50 days after topping. When sampling, no less than 3 tobacco plants are randomly selected from the same tobacco field with the same cultivation level, and the corresponding parts of each tobacco plant are selected during the above-mentioned specified time period. 2 to 3 pieces were used as tobacco leaves to be tested.

[0031] (2) Detection of chlorophyll a content and carotenoid content of tobacco leaves: According to the results of visual inspection of the botanical properties of tobacco leaves, tobacco leaves of different maturity level...

Embodiment 2

[0045] Experimental location: Xundian Science and Technology Experimental Base, Kunming City, Yunnan Province

[0046] Experimental object: K326 tobacco leaves

[0047] Grading method: with embodiment 1.

[0048] Grading results: For the lower tobacco leaf sample: the chlorophyll a content is 430-450 mg / g, the carotenoid content is 70-90 mg / g, and it is judged as M1;

[0049] For the lower tobacco leaf sample: if the chlorophyll a content is 320-350 mg / g, and the carotenoid content is 50-65 mg / g, it is judged as M2;

[0050] For the lower tobacco leaf sample: the chlorophyll a content is 250-260 mg / g, the carotenoid content is 40-45 mg / g, and it is judged as M3.

[0051] For the middle tobacco leaf sample: the chlorophyll a content is 430-450 mg / g, the carotenoid content is 75-90 mg / g, and it is judged as M1;

[0052] For the middle tobacco leaf sample: if the chlorophyll a content is 320-350 mg / g, and the carotenoid content is 65-70 mg / g, it is judged as M2;

[0053] For ...

Embodiment 3

[0058] Experimental site: Xundian Zhongling Base, Kunming City, Yunnan Province

[0059] Experimental object: Yunyan 87 tobacco leaves

[0060] Grading method: with embodiment 1.

[0061] Grading results: For the lower tobacco leaf sample: the chlorophyll a content is 450-460 mg / g, the carotenoid content is 70-90 mg / g, and it is judged as M1;

[0062] For the lower tobacco leaf sample: if the chlorophyll a content is 350-360 mg / g, and the carotenoid content is 50-65 mg / g, it is judged as M2;

[0063] For the lower tobacco leaf sample: the chlorophyll a content is 260-280 mg / g, the carotenoid content is 40-45 mg / g, and it is judged as M3.

[0064] For the middle tobacco leaf sample: the chlorophyll a content is 450-460 mg / g, the carotenoid content is 75-90 mg / g, and it is judged as M1;

[0065] For the middle tobacco leaf sample: the chlorophyll a content is 350-370 mg / g, the carotenoid content is 65-70 mg / g, and it is judged as M2;

[0066] For the middle tobacco leaf samp...

technical field

[0001] The invention belongs to the technical field of maturity classification of tobacco leaves, and in particular relates to an economical, convenient and efficient method for grading the maturity of fresh flue-cured tobacco leaves. Background technique

[0002] Tobacco leaf production is the foundation of the cigarette industry, and the quality of tobacco leaves plays a decisive role in the quality of cigarettes. Tobacco leaf maturity is the first factor that determines the quality of flue-cured tobacco. The maturity of fresh tobacco leaves is divided into physiological maturity and technological maturity. When the leaf grows to its final size and the accumulation of dry matter in the leaf reaches its maximum value, it reaches physiological maturity, so it is called physiological maturity. Tobacco leaves that have reached physiological maturity are scientifically modulated after harvesting, and the yield is the highest, but from the perspective of qualit...

Examples

Embodiment 1

[0027] Experimental site: Stone Forest Base of Kunming Tobacco Company, Kunming, Yunnan

[0028] Experimental object: Safflower Dajinyuan Tobacco Leaves

[0029] Grading method:

[0030] (1) Visually inspect the botanical properties of the tobacco leaves: the leaf age of the lower leaves is 60-70 days, or 7-10 days after topping; the leaf age of the middle leaves is 70-80 days, or 20-30 days after topping; The leaf age is 80-90 days, or 40-50 days after topping. When sampling, no less than 3 tobacco plants are randomly selected from the same tobacco field with the same cultivation level, and the corresponding parts of each tobacco plant are selected during the above-mentioned specified time period. 2 to 3 pieces were used as tobacco leaves to be tested.

[0031] (2) Detection of chlorophyll a content and carotenoid content of tobacco leaves: According to the results of visual inspection of the botanical properties of tobacco leaves, tobacco leaves of different maturity level...

Embodiment 2

[0045] Experimental location: Xundian Science and Technology Experimental Base, Kunming City, Yunnan Province

[0046] Experimental object: K326 tobacco leaves

[0047] Grading method: with embodiment 1.

[0048] Grading results: For the lower tobacco leaf sample: the chlorophyll a content is 430-450 mg / g, the carotenoid content is 70-90 mg / g, and it is judged as M1;

[0049] For the lower tobacco leaf sample: if the chlorophyll a content is 320-350 mg / g, and the carotenoid content is 50-65 mg / g, it is judged as M2;

[0050] For the lower tobacco leaf sample: the chlorophyll a content is 250-260 mg / g, the carotenoid content is 40-45 mg / g, and it is judged as M3.

[0051] For the middle tobacco leaf sample: the chlorophyll a content is 430-450 mg / g, the carotenoid content is 75-90 mg / g, and it is judged as M1;

[0052] For the middle tobacco leaf sample: if the chlorophyll a content is 320-350 mg / g, and the carotenoid content is 65-70 mg / g, it is judged as M2;

[0053] For ...

Embodiment 3

[0058] Experimental site: Xundian Zhongling Base, Kunming City, Yunnan Province

[0059] Experimental object: Yunyan 87 tobacco leaves

[0060] Grading method: with embodiment 1.

[0061] Grading results: For the lower tobacco leaf sample: the chlorophyll a content is 450-460 mg / g, the carotenoid content is 70-90 mg / g, and it is judged as M1;

[0062] For the lower tobacco leaf sample: if the chlorophyll a content is 350-360 mg / g, and the carotenoid content is 50-65 mg / g, it is judged as M2;

[0063] For the lower tobacco leaf sample: the chlorophyll a content is 260-280 mg / g, the carotenoid content is 40-45 mg / g, and it is judged as M3.

[0064] For the middle tobacco leaf sample: the chlorophyll a content is 450-460 mg / g, the carotenoid content is 75-90 mg / g, and it is judged as M1;

[0065] For the middle tobacco leaf sample: the chlorophyll a content is 350-370 mg / g, the carotenoid content is 65-70 mg / g, and it is judged as M2;

[0066] For the middle tobacco leaf samp...