Chuanhu 1 Not bad. KK 19 is also a flue-cured tobacco variety, which is easily limited by climatic conditions and has low economic benefits. Chuanhu 1 was mainly bred with KK 19. Compared with KK 19, its characters are more stable and excellent, and it has become the main variety planted in Jiangsu and Shanghai. Widely planted in Qinxian, Zhangjiagang, Gangzha and other areas, with excellent quality performance, good weight and smoke sense. In contrast, Sichuan-Shanghai 1 is better.