Abstract: Effects of fertilizers with different N-P-K ratios and applying methods on growth of Dendrobium nobile tissue cultured seedling were studied taking tissue cultured seedlings of Den. Lucky Girl ‘Sweetheart’ as materials. The results showed that treatments of foliar spraying and root irrigation with peters No.2 10-30-20 had the highest survival rates. Plant height, leaf number and stem circumference had moderate performance with the treatment of root irrigation with peters No.1 20-20-20, but the bud number was the fewest. The treatment of root irrigation with peters No.10 30-10-10 had the best performance in the vegetative growth, but the lowest survival rate. The treatment of root irrigation with 10-30-20 had the most shoot number, but the worst performance in the other indicators.

Key words: Dendrobium nobile, seedling, fertilization

摘要： 以春石斛品种‘甜心石斛’Den. Lucky Girl ‘Sweetheart’组培苗为材料，研究不同N、P、K比例的水溶肥及施肥方式对其幼苗生长的影响。结果表明，花多多2号(10-30-20)叶面喷施和灌根处理的植株成活率均为最高；花多多1号(20-20-20)灌根处理的植株株高、叶片数、茎围等指标表现居中，但新芽个数最少；花多多2号(10-30-20)灌根处理植株新芽数最多，其他指标较差；花多多10号(30-10-10)灌根处理的植株生长表现最优，但成活率最低。

关键词: 春石斛, 苗期, 施肥