毛竹（Phyllostachys pubescens）竹笋群动态的研究

 本文从克隆植物生长的调节与适应的角度，研究了毛竹竹笋群的时空动态。竹笋的单位面积产量及个体大小在年际之间变化很大。环境有利的年份出土的竹笋要比条件恶劣的年份多得多、高得多、壮得多。而且，自始至终较早的同生群的竹笋总比较晚的同生群的要高得多、壮得多。较早的同生群的竹笋刚出土时要经历一段生长缓慢的时期，而较晚的同生群的竹笋一出土生长就十分迅速。不管竹笋何时出土，它们几乎都同时进入最快生长期。竹笋高度日增量最快时可达每天100cm左右。本文解释了亚热带竹子在春季不同时间出土的竹笋为何及如何几乎同时抵达林冠顶部。最后，提出了一些有利于竹林经营管理的建议。

Studies on the Dynamics of the Bamboo shoots in Phyllostachys pubescens

In terms of the knowledge about the regulation and adaptation of clonal plants, this paper deals with the temporal and spatial dynamics of bamboo shoots in Phyllostachys pubescens. It was found that the mean number of new shoots emerging per unit area and the mean individual size varied among years. More, larger and higher new shoots emerged and survived in the favourable year than in a unfavourable year. Furthermore , shoots of the earlier cohorts were constantly larger and higher than those of the later cohorts from beginning to end. Shoots of the earlier cohorts grew slowly before their fast growing, while shoot growth of the later cohorts did not show such a slowly growing phase. Nevertheless, All shoots of both cohorts reached the fastest growing phase almost at the same time. The daily height increment of the bamboo shoots may amount to approximately 100 cm per day. It was discussed that why and how subtropical bamboo shoots differing in emergence time in spring may reach the canopy almost at the same time. At last, some suggestions were proposed for the management of the bamboo forests.