Effect of tobacco formulated fertilizer synergist on the contents of endogenous phytohormones and polyamine in flue-cured tobacco root system
烟草配方肥增效剂对烤烟根系内源激素和多胺含量的影响

The effect of tobacco formulated fertilizer synergist on the contents of endogenous phytohormones and polyamine in the root system of maturing flue-cured tobacco was investigated, and yield and output value of the tobacco leaf analyzed. Results show that tobacco formulated fertilizer synergist increases GA3, IAA and spermine contents, but decreases ABA and putrescine contents. Furthermore, decreasing application of tobacco formulated fertilizer synergist enhances spermine content in flue-cured tobacco. At the early stage, synergist has little impact on the content of spermidine. However, spermidine content increases rapidly at the late stage. 45.45 g tobacco formulated fertilizer with 0.454 5 g synergist treatment produces the best effects on endogenous phytohormones and polyamine contents. The yield and output value of tobacco leaf increase by application of tobacco formulated fertilizer synergist. Although tobacco leaf yield reduces with the use of synergist and decreasing amount of tobacco formulated fertilizer, output value increases due to higher quality tobacco leaf. 36.36 g formulated fertilizer with 0.454 5 g synergist treatment has the best effect.