Flue-cured tobacco variety NC297 tobacco leaf curing method
A curing method and a technology for flue-cured tobacco varieties, which are applied in the fields of tobacco, tobacco preparation, application, etc., can solve the problems of reduced oil content, reduced aroma, light color of tobacco leaves, etc., and can achieve sufficient aroma, high aroma and low starch content. Effect
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Embodiment 1
[0037] The invention discloses a method for curing tobacco leaves of flue-cured tobacco variety NC297. NC297 is obtained by planting in red soil, and the age of tobacco leaves in the middle part is 105 days. The roasting process includes the yellowing period, the color fixing period and the gluten-drying period.
[0038] Yellowing period:
[0039](1) Fire temperature control: raise the temperature in the barn to 34.5°C at a rate of 1°C / 3h, control the wet bulb temperature to 34.5°C, and stabilize the temperature for 2h; the motor frequency changes to 30Hz, and the speed is 500r / min.
[0040] (2) Initial stage of yellowing: Raise the temperature in the barn to 36.0°C at a rate of 0.1°C / h, control the wet bulb temperature to 35.0°C, and stabilize the temperature for 30 hours; the frequency of the motor changes to 35Hz, and the speed is 720r / min.
[0041] (3) Middle stage of yellowing: Raise the temperature in the barn to 37.0°C at a rate of 0.1°C / h, control the wet bulb tempera...
Embodiment 2
[0052] A method for curing tobacco leaves of flue-cured tobacco variety NC297. NC297 is obtained by planting in red soil, and the age of the lower tobacco leaves of NC297 is 60 days during curing. The roasting process includes the yellowing period, the color fixing period and the gluten-drying period.
[0053] Yellowing period:
[0054] (1) Fire temperature control: Raise the temperature in the barn to 34.7°C at a rate of 1°C / 3h, control the wet bulb temperature to 34.3°C, and stabilize the temperature for 2h; the frequency of the motor changes to 32Hz, and the speed is 480r / min.
[0055] (2) Initial stage of yellowing: Raise the temperature in the barn to 36.2°C at a rate of 0.1°C / h, control the wet bulb temperature to 34.9°C, and stabilize the temperature for 34 hours; the frequency of the motor changes to 37Hz, and the speed is 700r / min.
[0056] (3) Middle stage of yellowing: Raise the temperature in the barn to 37.2°C at a rate of 0.1°C / h, control the wet bulb temperatur...
Embodiment 3
[0067] A method for curing tobacco leaves of flue-cured tobacco variety NC297. NC297 is obtained by planting in red soil, and the age of the upper tobacco leaves of the NC297 is 120 days during curing. The roasting process includes the yellowing period, the color fixing period and the gluten-drying period.
[0068] Yellowing period:
[0069] (1) Fire temperature control: Raise the temperature in the barn to 34.3°C at a rate of 1°C / 3h, control the wet bulb temperature to 34.2°C, and stabilize the temperature for 2h; the motor frequency changes to 28Hz, and the speed is 520r / min.
[0070] (2) Initial stage of yellowing: Raise the temperature in the barn to 35.8°C at a rate of 0.1°C / h, control the wet bulb temperature to 35.2°C, and stabilize the temperature for 28 hours; the frequency of the motor changes to 33Hz, and the speed is 740r / min.
[0071] (3) Middle stage of yellowing: Raise the temperature in the barn to 37.2°C at a rate of 0.1°C / h, control the wet bulb temperature ...
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