秃杉人工林生物学特性研究

The Biological Characteristics of Planted Taiwania flousiana

通过对昌宁10个人工繁育秃杉居群近30年生物学特性的观测分析,结果表明,秃杉具有非常强的顶端优势,顶芽受损伤后,腋芽萌发枝直立生长,形成直立主干;从种子萌发至种植生长19年后,开始出现成熟叶,2-3年后75%的植株出现成熟叶。成熟叶出现2-3年,开始现花,雄花先于雌花进入成熟期,其生理成熟期相差3-4年;秃杉种子在常温下不耐贮藏,常温下贮藏不应超过120d,120d后种子场圃发芽率快速下降,210d后种子无播种价值。秃杉生长过程中,坡向、坡位作为重要立地因子对秃杉林分生长影响显著。

Through the observation and analysis of the biological characteristics of 10 artificially bred Taiwania flousiana population in Changning in recent 30 years,the results show that the buds have a very strong apical advantage.After the buds are damaged,the axillary bud stands upright and forms the upright trunk. After 19 years of seed germination and planting growth,mature leaves began to appear. After 2-3 years,75% of the plants appeared mature leaves. It began to flower after 2-3 years of mature leaf appeared and the male flower entered the mature stage before the female flower,their physiological maturity varied by 3-4 years. The seeds of Taiwania flousiana can not be stored at normal atmospheric temperature. The storage at normal atmospheric temperature should not exceed120 d. After 120 d,the germination rate of seed garden decreased rapidly. During its growth process,slope and position are tow important factors that has significiant impact on the growth of Taiwania flousiana.