[Objective] To study the optimal transplant date in Xinyang flue-cured tobacco area,provide reference for improving flue-cured tobacco quality. [Method] The field experiment of transplant date with randomized block was conducted in Pingqiao area,Xinyang City in2012. [Result] The result showed that,plant height of T4 treatment was highest but other index were lower in days after transplant date of 45 and 75,but the agronomic trait of T2 and T3 were better than T1 and T4 in mature period; appearance quality o...