高节竹竹鞭空间分布及其数量特征  

Spatial Distribution and Quantitative Characteristics of Phyllostachys prominens Rhizome

作　　者：杨裕振 张凤萍 章承林[1] 肖创伟[1] 佘远国[1] Yang Yuzheng;Zhang Fengping;Zhang Chenglin;Xiao Chuangwei;She Yuanguo(Hubei Ecology Polytechnic College,Wuhan 430200;Hubei Jingyuan Landscape Design Limited Company,Xianing 430700)

机构地区：[1]湖北生态工程职业技术学院,武汉430200 [2]湖北源野景观设计有限公司,咸宁437000

出　　处：《湖北林业科技》2021年第4期4-8,共5页Hubei Forestry Science and Technology

基　　金：中央财政林业科技推广项目“雷竹良种与早出丰产栽培集成应用”(鄂[2020]TG08)。

摘　　要：为了解高节竹竹鞭空间分布及其数量特征,揭示高节竹地下竹鞭生长规律,为高节竹林分更新提供理论依据,以高节竹成熟林分为材料,在林分内设置标准地,在标准地内布设样方,采取挖掘法调查竹鞭空间分布及其数量特征。结果表明:在0~30 cm土层中竹鞭重量为4252.07 g·m^(-2),占总鞭重的99.57%;3 a生竹鞭鞭长最长为305.72 cm·m^(-2),占总鞭长的23.18%;6 a生竹鞭平均节间长最长为4.83 cm2壮芽主要着生在1~3 a鞭龄鞭段上,占99.04%;休眠芽主要着生在1~3 a竹鞭上,占85.71%;死芽主要着生在3~5 a竹鞭上,占84.44%;笋芽主要着生在2~3 a竹鞭上,占75.00%。高节竹竹鞭集中分布在0~30 cm土层中,壮龄鞭鞭长最长、老龄鞭平均节间长最长、壮龄鞭平均鞭径最大,壮芽、笋芽及休眠芽主要分布在1~3 a鞭上,死芽主要分布在3~5 a鞭上。To understand spatial distribution and quantitative characteristics of Phyllostachys prominens rhizome,and reveal growth laws of underground bamboo rhizome,so as to provide theoretical basis for the regeneration of Phyllostachys prominens stands.Sample plots were selected in the mature Phyllostachys prominens stands,in which quadrates were set up.Digging-method was used to survey the spatial distribution and quantitative characteristics of Phyllostachys prominens rhizome.The results showed that:the weight of Phyllostachys prominens rhizome was 4252.07 g·m^(-2) in the topsoil of 0~30 cm,accounting for 99.57%of the total weight of the rhizome;the rhizome length(3 years)was up to 305.72 cm·m^(-2),accounting for 23.18%of the total length;the mean internode length(6 years)was up to 4.83 cm2 Robust buds mainly serried in the rhizome sections(1~3 years),accounting for 99.04%;dormant buds mainly grew in the rhizome sections(1~3 years),reaching up to 85.71%of the total;dead buds covered rhizome sections(3~5 years),counting the ratio of 84.44%;shooting buds chiefly existed in rhizome(2~3 years),occupying 75.00%of the total.Phyllostachys prominens rhizomes concentrated in the topsoil of 0~30 cm;the length of mature rhizomes was maximum;the internodes of over-mature rhizomes were the longest,the mean diameter of mature rhizomes was the largest;robust buds,shooting buds and dormant buds majorly distributed in the rhizomes(1~3 years);dead buds existed in the rhizomes(3~5 years).

关 键 词：高节竹 竹鞭 空间分布 数量特征 生物量 

分 类 号：S794.4[农业科学—林木遗传育种]