Abstract: In order to screen the best cultivation substrate formula suitable for breeding lily（Lilium brownii var. viridulum Baker） bulbs, in the stage of scale bulblets to small bulblets, used OT series lily Conca d’or as the experimental material to study the effects of eight different substrate preparations of grass charcoal, vermiculite, perlite and river sand on the growth of Conca d’or bulblets. The results showed that there were significant differences in the plant growth, proliferation coefficient and bulblets size of Conca d’or bulblets. The cultivation substrate was composed of vermiculite, perlite and river sand.,the number of bulblets was relatively high, and the proliferation coefficient was high, because of the three kinds of matrix nutrients were less, the circumference and weight of the bulblets were small, so it was not suitable for cultivation substrate. Taking into account the plant morphology, bulblet size, bulblet weight, rooting and other indicators, the cultivation substrate is charcoal：perlite=3∶1, which is most conducive to the growth of the Conca d’or bulblets.

Key words: lily（Lilium brownii var. viridulum Baker）, Conca d’, or bulblets, cultivation substrate