In order to facilitate and promote scientific cultivation and management of tobacco in Yuexi County of Liangshan Prefecture,to achieve local farmers' income,taking local large-scale cultivation of Yunyan 85 as the comparison,and taking the red flowers large Jinyuan,Yunyan 87,Yunyan 97 and K326 as the testing varieties,the authors comparatively compare and analyze their bearing periods,disease resistance,botanical characteristics,agronomic traits,chemical composition,sensory smoking,the yield and output.The ...