Abstract: Research work was done on the effective ness of topdressing varieties applied during transplantation period on the tissue-culture cultivated Betula alnoides seedling growth and survival rate. The results show that the compound fertilizer of red subsoil, burnt soil and sawdust with the proportion at 3∶3∶4 plus calcium magnesium phosphorus (6km/m³) produces best result and use of 0.4% potassium sulfate compound fertilizer is best, which is proved much better than other treatments in terms of seedling survival rate and height.

Key words: Betula alnoides, tissue-culture seedling, survival rate