Abstract: An experiment was conducted to investigate the cultivation effects of coir dust， perlite and vermiculite with different proportions on growth and development of Primula saxatilis in order to improve pot\|planted P. saxatilis cultivation types and reduce its dependence on peat in soilless culture. The results showed that the indices （plant height， crown diameter， leaf number， the amount of growth， chlorophyll content） responsed differently to substrates. Combined with the multi-index evaluation， results indicated that the physical and chemical properties in these two treatments with different volume ratios of coir dust/perlite/vermiculite as 1∶1∶2 and 2∶1∶2
met the general requirements for growing media. P.saxatilis in those treatments showed strong growth rate and dark green leaves， also with good flowering quality， and the comprehensive performances of growth and development were superior to that in the control. Those mixed substrates could be used as substitutes for peat as soilless growing media for P. saxatilis.

Key words: Primula saxatili, coir dust, multi-index evaluation