以浙江省3种不同经营类型下毛竹为研究对象，调查了毛竹林地下鞭茎特征及其不同年龄结构上的分布。结果表明：笋材两用林（Ⅱ类）林地鞭茎长度、鞭茎直径和鞭茎节间长均大于笋用林（Ⅰ类）和材用林（Ⅲ类）；Ⅰ类经营有最大的鞭段数量，但生物量表现为最小。在年龄结构分布上，Ⅰ类经营在3-4 a上有最大的鞭茎长度、鞭段数量和鞭茎生物量，而Ⅱ类和Ⅲ类经营则表现为5-6 a最大；相比Ⅰ类和Ⅱ类，Ⅲ类经营的鞭茎长度、鞭段数量和鞭茎生物量均在7-8 a上有较大的比例，而3-4 a占有比例较低；鞭茎直径和节间长在3类经营类型下均表现为无年龄结构上的差异。
Under three different management types of Phyllostachys edulis stands in Zhejiang Province,the characteristics of bamboo rhizomes and their age structure were investigated. The results showed that the rhizome length,diameter and internode length in the shoot-wood dual-use bamboo forest (Class Ⅱ) were greater than those in shoot oriented bamboo forest (Class Ⅰ) and wood oriented bamboo forest (Class Ⅲ). Class Ⅰ had the largest number of rhizomes and the smallest biomass. In terms of age structure,in Class Ⅰ Phyllostachys edulis stands,the largest rhizome length,number and the biomass were found in the 3-4 years old rhizomes,while in class Ⅱ and Class Ⅲ bamboo stands reached the maximum in the 5-6 years old rhizomes. Compared with class I and Class Ⅱ,the rhizome length,number and biomass of class Ⅲ showed a large proportion until 7-8 years old,the proportion of 3-4 years old was relatively low. However,the diameter and internode length of rhizomes showed no significant difference in various ages under the three management types.