毛竹丰产林大小年生长差异研究  

The growth differences of bamboo forests in on off-year

作　　者：姚希世 林建忠[2] 林斌[2] 曹流清 粟林丽 熊建军[2] 李星桦 

机构地区：[1]湖南鹰嘴界国家级自然保护区管理局,湖南会同418300 [2]会同县林业局,湖南会同418300 [3]会同县林业科学研究所,湖南会同418300

出　　处：《湖南林业科技》2015年第6期111-118,共8页Hunan Forestry Science & Technology

基　　金：怀化市林业科技推广项目;会同县楠竹低改顶目[中会农(2000)04]

摘　　要：通过对不同经营类型毛竹丰产林的大、小年生长差异状况进行系统分析研究。结果表明:丰产竹林大、小年交替出笋、成竹生长数量和质量差异非常明显,不同经营措施的三种丰产竹林,小年平均出笋、成竹数为16.5%、17.2%,比大年少67.0%和65.6%,小年之间平均变异幅度为2.62倍、2.44倍、比大年之间大1.39倍和1.80倍,小年之间最大的出笋、成竹变异幅度为5.79倍、5.22倍,比大年之间大4.56倍和4.58倍;相邻大年与小年之间的出笋、成竹变异幅度平均为7.54倍和6.94倍,最大变异幅度为29.60倍和21.16倍。小年新成竹平均胸径和平均枝下高为9.74 cm和6.8 m,比大年新成竹平均胸径和平均枝下高小2.3 cm和低1.8 m。Based on the research on the growth differences of bamboo forests in on off-year. The results show that there are obvious difference in growth quantity and quality of bamboo shoot, new bamboo in on off-year. Within three kinds of different management measures, the average quantity of bamboo shoot and new bamboo of low yield year was 16. 5% and 17.2%, and its less than high yield year of 67.0% and 65. 6%. The average variation amplitude during the low yield years was 2. 62 times, 2. 44 times, and its higher than in high yield years was 1.39 times and 1.80 times. The average variation amplitude of bamboo shoot and new bamboo of low yield years was 5.79 times, 5.22 times, and its higher than in high yield years was 4. 56 times and 4. 58 times. The average variation amplitude of bamboo shoot and new bamboo be- tween the adjacent on off-year was 7.54 times and 6. 94 times, and maximum variation amplitude of its was 29. 60 times and 21.16 times. The average DBH and average under branch height of new bamboo of low yield year was 9.74 cm and 6. 8 m, and its less than in high yield year was 2. 3 cm and 1. 8 m.

关 键 词：毛竹 丰产林 大小年 生长 差异 研究 

分 类 号：S795.05[农业科学—林木遗传育种]