Effect Of Film Uncovering And Earth-up Method On Yield And Quality Of Hongda Flue-cured Tobacco

In order to investigate the effect of tobacco yield through film-uncovering and earth-up, provide the theoretical foundation in production practice of Yuanjiang tobacco, this paper studied the yield, main agronomic traits and inner chemical composition of main cultivated variety of Hongda flue-cured tobacco in Yuanjiang county through different time and manner of film-uncovering and earth-up. The main conclusions are as follows:1. The film-uncovering have a certain role in promote plant growth, not only can improve the agronomic traits of tobacco plant, promote root growth, at the same time can increase tobacco production, improve tobacco inner quality.2. Different film-uncovering and earth-up time on the growth and development of tobacco plant has some impact.35days after transplanting the film-uncovering can improve the plant growth, root development, the leaf tobacco production and the output value of tobacco; at the same time tobacco nicotine content is higher, intrinsic chemical composition is coordinated.3. Whether conventional transplanting or transplanting seedlings under the film, film-uncovering earth-up and film-uncovering earth-up and film can promote plant growth, not only can improve the agronomic traits of tobacco plant, promote root growth, at the same time can increase tobacco production, improve tobacco inner quality.4. Economic analysis shows that film-uncovering earth-up and transplanting seedlings under film and then film-uncovering earth-up increased labor input, but the yield increased (traditional transplanting). Film-uncovering earth-up can increase output value through improving tobacco production, improve quality of tobacco, this tobacco production system could expanded in Yuanjiang region.