Fuente: WIPO "tobacco agriculture" The invention discloses a primary baking process for increasing the aroma richness of tobacco leaves, and discloses a primary baking process for increasing the aroma volume of tobacco leaves. The process comprises a tobacco leaf yellowing period, a withering period, a color fixing period and a stem drying period. The method is technically characterized in that (1) in the yellowing stage, medium temperature and medium humidity are combined, and tobacco leaves are gradually yellowed; (2) in the withering period, high temperature and high humidity are combined, and the tobacco leaves are properlywithered; (3) in the color fixing period, cooling and humidifying are carried out and the leaves are slowly dried; and (4) in the stem drying stage, the temperature is controlled, the humidity is adjusted and stems are slowly dried.