树型蕨类桫椤生物学特征初探

A probe into biological features of spinulose tree fern growing into treelike pteridophyte

植物要长成大树需要支持能力、水分供给能力和生物积累量.桫椤茎的下端着生大量不定根形成的"根被"和茎共同维持它的支持能力和水分供给能力,而它的大型树冠产生的生物积累量也使桫椤长成大树成为可能.

To grow into big trees,plants need supportive capability, water supply capability and biological a massing capacity,which are maintained by the stem and＂ root sheet＂formed by plenty of adventitions roots on the lower stem of spinulose tree fern. The biological amassing capacity, from the big crown makes it possible for the spinulose tree fern to grow into a big tree.