a decreasing trendp < 0.05
Alpha and beta diversity analysis of the flue-cured tobacco rhizosphere microbiota at different transplantation stages Figure 2A shows that the alpha diversity index of the rhizosphere microbiota of flue-cured tobacco showed a decreasing trend with the increase in transplanting time ( p < 0.05 or p < 0.01 or p < 0.001), indicating that the diversity and richness of the rhizosphere microbiota decreased gradually with the increase in transplanting time.