兴安杜鹃和迎红杜鹃种子、幼苗及苗木生长特性研究

对兴安杜鹃、迎红杜鹃种子发芽、幼苗形态建成及大苗生长节律进行研究。结果表明：兴安杜鹃和迎红杜鹃种子成熟度较好，兴安杜鹃平均发芽率和发芽势为91％和74％，迎红杜鹃平均发芽率和发芽势为94％和79％，完全可用种子进行苗木繁殖；幼苗形态建成较为缓慢，约需90d，这段时间是播种繁殖成败的关键时期。哈尔滨地区两种杜鹃的7～10a生苗生长期约为5个月（5月1日-9月28日），高生长主要集中在5月至8月。9月下旬有一个短时间的二次生长期，10月基本停止生长进入休眠期。

Growth Characteristics Study on Seeds,Seedlings and Plants of Rhododendron. dauricum and Rh. mucronujatum

The study on seed germination,seedling morphogenesis and plant growth rhythm of Rhododendron.dauricum and Rh.mucronujatum was carried out.The results showed that the maturity of their seeds was good.The average germination rate and germination energy of Rhododendron.dauricum were 91% and 74%,as well as that of Rh.mucronujatum were 94% and 79% respectively,which indicated it was completely feasible to use seeds for nursery stock propagation.The seedling photomorphogenesis was relatively slow and would take a...