鼎湖山桫椤的繁殖栽培

桫椤为国家一级保护植物，分布于我国台湾、福建、海南、广东、广西、贵州、四川、云南、西藏等省区（１），在我国最北可达北纬３０°，海拔２５０—７５０ｍ的静风、高湿、荫蔽的生境中．鼎湖山自然生长的桫椤已人为砍伐殆尽，为保存植物的种质资源，恢复鼎湖山为华南植物种于基因库的作用，进行了桫椤的引种和孢子繁殖栽培，并模拟高湿、荫蔽的生境建立自然的生态群落进行就地保护．

CULTIVATION AND PROPAGATION OF ALSOPHILA SPINULOSA TRYODIN DINGHUSHAN,GUANGDONG

Alsophila opinulosa(Wall. ex Hook.) Tryon. is classified as rank 1 in the national list of rare and endangered plant species of China. It distributes to Taiwan. Fujian. Hainan, Guangdong,Guangxi,Guizhou,Sichun, Yunnan and Xizang provinces or autonomous regions. It grows the best reaching 30° N, at the elevation of 250-750 m in the environment of motionless wind. high humidity, shady place. By over utilization, the natural Alsophila spinulosa resources is almost exhausted in Dinghushan. In order to preserved the germ plasm resource, resume Dinghushan's function of gene pool of seed plant of South China, an experiment of reintroduction and propagation was carried out,more than 200 seedlings propagation by spores now in situ conserved in natural ecological community with high humidity, shady environment in Dinghushan Arboretum.