摘要
1985年10月至1990年9月在东北林业大学帽儿山实验林场老爷岭生态站,对刺五加的种子性质、蕴藏量及更新,通过野外调查和定位观测方法,得出研究结果:(1) 刺五加的种子数为3—7粒/果:平均4—5粒/果。(2) 种子重6.9—7.3mg/粒,在种子库中虽有一些蕴藏,但是其中94.5％的种子不成熟或遭昆虫危害,因此,其更新的价值不大。(3) 刺五加种子在扩散前,成熟种子的比例只有34.2％,而未成熟种子及被昆虫捕食的种子占65.8％,严重地影响刺五加的有性更新过程。(4) 在人工落叶松林下模拟播种,从种子转化为1年生幼苗的转化率为2％和7.9％(前者播种在枯枝落叶上,后者播种在枯枝落叶下),2年生以后存活趋于稳定。
The seed quality and quantity, seed disperal, seed bank and recruitment of Acanthopanax seticosus, have been studied by field investigation and location observation, in order to make rational use of its resources. The results are as follows:(1) The seeds of A. Senticosusare 3-7 per fruit, mean are 4—5 per fruit.(2) The average weight of one seed is 6.9-7.3 mg. There are a few seed in seed bank, but 94.5％. of these seeds are unmature and harm by insects. Therefore, the role of these seed in recruitment is very few.(3) Before disperaling, the mature seeds are 34.2％, and the unmature with harm by insects seeds are 65.8％, which severely limited the sexual regeneration.(4) The transformation ratios are 2％ and 7.9％ (showed on the litter) from seed to la old seedling, respectively, (showed under the litter) after 2a, the survival rate of the seedling towards to stable.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1992年第5期12-17,共6页
Journal of Northeast Forestry University
基金
国家自然科学基金
关键词
刺五加
生殖生态学
种子库
更新
Acanthopanax senticosus
Reproductive ecology
Seed base
Regeneration
