9 seedling formulas of light medium were made from mixture of peat,carbonised rice husk,vermiculite and perlite.Containerized seedling method was applyed to plant Liriodendron chinensis（Hemsl.）Sarg.to choose better substrate formula.The results showed that there were significant differences in seedling height,ground diameter,root system and dry biomass per plant among the 9 formulas.The young plants with formula M9 (peat 50%+ carbonised rice husk 50%) grew the best than the other 8 formulas,its height and ground diameter(age of four months) were 8.1 cm and 3.43 mm respectively.And when it was transplanted and continued to cultivate in original formula,then its height could reach 38.7 cm and ground diameter could be 7.9~10 mm,and the tree trunks and roots presented strong.