Effect of media and fertilization on bulblets regeneration and flowering of Lilium longiflorum

Orthogonal-design was used in this experiment，in which the effects of four different types media and fertilization，N／P/K-ratio and the planting space on Lilium longiflorum were studied in combination treatment．The media used in the study are as follows：sawdust blended sand(S／S=1：1)，blended peanut hull with sand(PH／S=1：1)，sawdust blended cinder(S／C=1：1)and an admixture of KD-1 hydrophilic gel and sandy tidal soil(SY／S=0．5：99．5)．Results showed that the highest gray-relational-grade， for propagating of bulblets， was obtained by the combination treatment which was SY／S medium combined with N 0．0071 mol／L and N：P：K=10：5：5 at a planting space of 8cm×15cm．The one of S／S combined with N 0．0143 mol／L and N：P：K=5：10：10 at a planting space of 8cm×15cm was the one next to the highest The treatment of s／c with N 0．0143 mol／L and N：P：K=5：10：10 at a planting space of 8cm×15cm obtained the minimum gray-relational grade．The different treatments had significant effects respectively on the period of bud-initiate and the flowering stage．The bud‘initiate and the date of first opening-flower were accelerated by the treatment of s／s medium with N 0．0107 mol／L and N：P：K=18：9：15 at a planting space of 30cm×40cm．on which the leaf area index and the higher chlorophyll content were obtained．The largest bud quantity and heavier fresh-flower-branch as well as bigger opening-flower-diameter were obtained on both the treatments of S／S-medium with N 0．0107 mol／L and N：P：K=18：9：15 at a planting space of 30cm ×40cm and of SY／S with N 0．0107mol／L and N：P：K=18：9：15 at a planting space of 30cm × 40cm ，on which the larger percentage of standard cut-flower was observed either．The difference among combination treatments reached a significant level respectively．