Fecha de publicación: 31/12/2021 Fuente: Wipo Tobacco Agriculture The invention discloses a modulation method for improving the tobacco leaf quality of a Chinese prepared tobacco raw material of heated cigarettes by utilizing manual control. The modulation method comprises the following steps: (1) harvesting fresh tobacco leaves of Chinese prepared tobacco which are properly mature, and hanging on rods; (2) shed loading: loading the tobacco leaves on which the rods are hung into an airing shed; (3) stabilizing the temperature, adjusting the humidity and turning brown: airing until about 90% of the tobacco leaves are brown; (4) adjusting temperature and humidity and shaping: airing the tobacco leaves until the tobacco leaves become soft and strips, and shaping; continuously blending, stopping heating and humidifying when the main veins of the tobacco leaves become brown, are basically dry or are dry and fragile, and naturally softening; (5) unloading the leaves from the rods and bundling; and (6) storing and alcoholizing, namely naturally alcoholizing in a room which is free from peculiar smell, dark, aired in the shade and ventilated. The content of aroma substances in the tobacco leaves and the sensory quality under the heating condition are improved, and the method has great significance in guaranteeing the quality stability of Chinese prepared tobacco raw materials of heated cigarettes.