Changde Tobacco Planting and Recycling Company has Hupingshan Tobacco Station, Jiangping Tobacco Purchasing Point and Changde Guang Sheng Yuan Flue-cured Tobacco Professional Cooperative. Tobacco (scientific name: NicotianatabacumL. ) is an annual or limited perennial herb of Nicotiana of Solanaceae, all of which are glandular hairs. The roots are thick. The stem is 0.7-2 meters high and the base is slightly lignified. The leaves are oblong-lanceolate, lanceolate, oblong or ovoid, the top is gradually sharp, and the base is gradually narrowed until the stem is ear-shaped and half-embracing. Inflorescence terminal, conical, flowery. Pedicel 5-20 mm long. Capsule ovoid or oblong, approximately equal to persistent calyx. Seeds round or broadly oblong, about 0.5 mm in diameter, brown. Flowers and fruits in summer and autumn.