[Objective] This study was conducted to find an effective method to control heavy metals in tobacco. [Method] Field experiments were carried out in the culture process of flue-cured tobacco, and the effects of application of rapeseed cake at different amounts in reducing heavy metal contents in tobacco were investigated. [Result] The application of different amounts of rapeseed cake as the base fertilizer had a positive effect in reducing heavy metal contents in tobacco, and the treatment applied with oil cake accounting for 30% of total fertilizer showed an effect significantly different from that of the CK. [Conclusion] This study has a positive effect on the improvement of tobacco safety, and provides certain scientific guide for the improvement of tobacco safety by improving fertilization modes and fertilizer kinds and for the selection and pretreatment of fertilizers, which are of very important significance to practical production.
