长周期母竹留养模式下笋用毛竹的立竹密度对竹鞭特征及根系活力的影响  

Effect of moso bamboo forest density on rhizome characteristics and root activity of moso bamboo under long-period mother bamboo conservation mode

作　　者：蔡星 吴君 李秉钧 李士坤 荣俊冬[1] 陈礼光[1] 何天友[3] 郑郁善[1] CAI Xing;WU Jun;LI Bingjun;LI Shikun;RONG Jundong;CHEN Liguang;HE Tianyou;ZHENG Yushan(College of Forestry,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China;Zhangping Forestry Bureau,Zhangping,Fujian 364400,China;College of Landscape Architecture and Art,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China)

机构地区：[1]福建农林大学林学院,福建福州350002 [2]漳平市林业局,福建漳平364400 [3]福建农林大学园林学院,福建福州350002

出　　处：《福建农林大学学报（自然科学版）》2023年第4期500-504,共5页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：福建省科技厅引导性项目(2020N0002);福建省林业局林业科研项目(闽林科便函[2019]16号)。

摘　　要：以笋用毛竹林为研究对象,采用长周期母竹留养模式在福建省漳平市进行试验,以(2 250±100)株·hm^(-2)立竹密度毛竹林为对照组(CK),分别设置(1 365±100)、(1 950±100)、(2 550±100)和(3 150±100)株·hm^(-2)立竹密度毛竹林为A、B、C、D处理组,分析立竹密度对竹鞭数量结构特征、年龄结构特征、鞭芽特征和鞭根根系活力的影响。结果表明:随着立竹密度的增大,毛竹竹鞭的总鞭长、总鞭质量和鞭节数均呈先增大后减小的变化趋势;CK平均节间长最大,D处理最小;幼壮龄鞭受立竹密度的影响大于老龄鞭,C处理的幼壮龄鞭总鞭长、总鞭质量、鞭节数和平均节间长均最大,且与其他处理存在显著差异(P<0.05);D处理的老龄鞭总鞭长、总鞭质量、鞭节数和平均节间长均最大;总鞭芽数、弱芽数、壮芽数随立竹密度的增大呈先增多后减少的变化趋势;D处理的空节芽数最多,CK最少;毛竹鞭根系活力随立竹密度的增大呈先增大后减小的变化趋势。表明C处理最有利于毛竹竹鞭系统的生长繁殖。Taking bamboo forest for shoot as the research object,the experiment was carried out in Zhangping City,Fujian Province by using the long-period mother bamboo retention model.The density of(2250±100)plants·hm^(-2)was set as the control group(CK),and the densities of(1365±100),(1950±100),(2550±100)and(3150±100)plants·hm^(-2)were set as A,B,C and D treatment groups.The effects of bamboo density on the number structure characteristics,age structure characteris-tics,rhizome bud characteristics and root activity of rhizome were analyzed.The results showed that with the increase of bamboo den-sity,the total whip length,total whip weight and whip number of bamboo rhizome increased first and then decreased.The average internode length of CK group was the largest and that of D group was the smallest.The young rhizome was more affected by the densi-ty of bamboo than the old rhizome.The total rhizome length,total rhizome weight,number of rhizome nodes and average internode length of the young rhizome of C treatment were the largest,and there were significant differences among other treatments(P<0.05).The total rhizome length,total rhizome weight,number of rhizome nodes and average internode length of the old rhizome of D treatment were the largest.The total number of rhizome buds,weak buds and strong buds increased first and then decreased with the increase of bamboo density.The number of empty buds in D treatment was the largest and that in CK group was the smallest.The root activity of bamboo rhizome increased first and then decreased with the increase of bamboo density.It indicated that C treatment was more conducive to the growth and reproduction of bamboo rhizome system.

关 键 词：长周期母竹留养模式 笋用毛竹 立竹密度 竹鞭系统 根系活力 

分 类 号：S725.6[农业科学—林木遗传育种]