新造毛竹种源竹鞭生长规律研究

Study on Rhizome Growth Pattern of Newly-planted Phyllostachys pubescence of Different Provenances

通过对 9个种源的竹鞭生长调查表明 ,各种源鞭径、鞭段长、鞭段数、总鞭长、鞭幅、鞭深等指标 ,都随造林年限的延长而增大 ,但鞭节长随时间没有呈明显的变化规律。鞭径以中带、北带为好 ;鞭段长以南带最大 ,总鞭长均为南带 >中带 >北带。从鞭幅看也为南带的最大 ,分布深度以北带为深。鞭节以北带和中带鞭节较长。从总体看 ,竹鞭生长各指标以福建武夷山较好 ,广东从化最差。

It has shown,through investigation on growth of bamboo rhizome from 9 different provenances,that such rhizome indexes as rhizome diameter,rhizome internode length,total number of rhizome internode,rhizome distribution range and depth are all increased with bamboo stand age,but without marked change for rhizome internode length.Rhizome distribution width of those bamboo from middle and north area provenances are much bigger,rhizome internode length of the bamboo from south area provenance is the largest;the sequence of total rhizome length is south area>middle area>north area.Rhizome distribution range of the bamboo from south area provenance is the biggest with being deepest for the bamboo north area provenance.Number of rhizome internode of the bamboo from north and middle area provenances are much more.As a whole,all kinds of bamboo rhizome growth indexes are some better for those bamboo from Wuyishan city,but worst for those from Guangdong Province.Those conclusions are of some higher reference value for management of Phyllostachys pubescens stand.