In order to explore the proper planting date of tobacco planted in tobacco - rice cropping area, this paper com- pared the impacts of different sowing and transplanting time and cellar depth on the temperature internal and external the cellar,the tobacco agronomic traits, the physiological and biochemical indexes. The results show that: (1)compared with conventional transplanting, the well cellar transplanting has good thermal insulation effect, especially in rainy and cloudy day ; (2) early sowing and transplanting can advance the growth ...