海子坪天然毛竹无性系种群地下茎生长与分布规律  

Growth and rhythm of rhizome system for natural forest of Phyllostachys pubescens clonal population in Haiziping

作　　者：陈冲[1] 董文渊[2] 郑进烜[3] 

机构地区：[1]衡阳师范学院,湖南衡阳421002 [2]西南林业大学职业技术学院 [3]云南省林业调查规划院

出　　处：《林业科技开发》2012年第1期26-29,共4页China Forestry Science and Technology

基　　金：云南省中青年学术技术带头人后备人才资助项目(编号:2007PY01-17);衡阳师范学院青年科学基金资助项目(编号:10A54)

摘　　要：采用形态特征、组织发育成熟度和生理活动的规律综合判断竹鞭相对年龄,具有准确、实用的特点;天然毛竹无性系种群地下茎壮龄鞭的鞭径、节间长、芽数和鞭长均大于老、中、幼龄;天然毛竹无性系种群地下茎鞭梢生长始于4月,5月进入新鞭速生期,6—9月生长速度最快,到12月停止生长;天然毛竹无性系种群95%的鞭根系生长在0～50 cm深的土壤中,21～40 cm是天然毛竹无性系种群鞭根系的主要分布层,占整个剖面的60%。The relative age of rhizome was well estimated by its morphological characters, tissue maturity and physiological activities. The diameter, intemode, amount of bud and length in the stands of 2-3 ages were greater than that in the stands of 1 ages, 4-5 ages, and over 6 age of Phyllostachys pubescens clonal population in Haiziping. The annual growth active cycle of rhizome was from April to November and during which the rapidest growth stage was from June to September. 95 % of rhizome was distributed at the depth of 0-50 cm in the soil and 60% of them was mainly distributed in the 20-40 cm depth.

关 键 词：地下茎 生长与分布规律 天然毛竹林 无性系种群 

分 类 号：S543.901[农业科学—作物学]