紫竹种苗林地下鞭系分布特征  

The distribution characteristics of subterraneous stem of young Phyllostachys nigra stands

作　　者：杨清平[1] 陈双林[1] 郭子武[1] 李迎春[1] 顾李俭 陈奇梁 

机构地区：[1]中国林业科学研究院亚热带林业研究所,浙江富阳311400 [2]杭州临安太湖源观赏竹种园有限公司

出　　处：《林业科技开发》2011年第5期33-36,共4页China Forestry Science and Technology

基　　金：杭州市重大科技创新项目"高品质笋用竹种质资源发掘与开发利用关键技术研究与示范"(编号:20072312A23);浙江省林业科技计划项目"海岛优良竹种筛选与培育技术研究"主要(编号:07A01)

摘　　要：为了给优良观赏、材用、笋用竹种紫竹高效培育提供科学依据,以紫竹种苗林为对象,开展了地下鞭系分布特征研究。结果表明,紫竹地下鞭系分布浅,分布于20 cm土层内,0～10 cm和10～20 cm土层的鞭段数和鞭长分布比例均差异极显著,0～10 cm土层的鞭段数、鞭长分别占总鞭段数、总鞭长的90.30%、92.23%。不同年龄竹鞭平均鞭径无显著差异,2年生和3年生竹鞭鞭长差异不显著,均显著地高于1年生竹鞭鞭长。1～3年生竹鞭侧芽数无显著差异。不同年龄竹鞭平均鞭段长、平均鞭节长无显著差异,1～2年生竹鞭鞭段平均侧芽数差异不显著,均显著地高于3年生竹鞭;0～10 cm、10～20 cm土层1～3年生竹鞭鞭段数、鞭长的分布比例差异显著,1年生竹鞭100%分布于0～10 cm土层中。2年生竹鞭平均鞭径、平均鞭段长、平均鞭节长和鞭段平均侧芽数均差异不显著,鞭长、鞭节数和侧芽数差异显著或极显著。3年生竹鞭平均鞭径、侧芽数、平均鞭段长、平均鞭节长和鞭段平均侧芽数差异不显著,鞭段数、鞭长和鞭节数差异显著。Investigation on distribution characteristics of subterraneous stem of Phyllostachys nigra could provide a scientific basis for high-benefit cultivation of Ph. nigra used for shooting, timber and ornamentation. The results indicated that the bamboo rhizome was under top soil of 0-20 cm, and very significant difference on distribution ratio of number and length of rhizome between the soil layer of 0-10 cm and 10-20 cm was found. Distribution ratio of those in the soil layer of 0-10 cm was accounted for 90.30% and 92.23% of total rhizome joint and length, respectively. No significant difference on diame- ter appeared of different ages, and on length of 2-3 a rhizome, but the length of 2-3 a rhizome was obviously higher than that of 1 a rhizome. Significant difference on number of rhizome was found between 1 a and 3 a rhizome, while no signifi- cant difference of that was found between 2 a and 1 a, 3 a rhizome. Number of buds, mean length of rhizome and joint for 1-3 a rhizome was nearly the same. No significant difference on mean number of buds of 1-2 a rhizome was found, and that of 1-2 a rhizome was obviously higher than that of 3 a rhizome. There was significant difference on distribution ratio of rhizome number and length of ages between soil layer of 0-10 cm and 10-20 cm, and 1 a rhizome was nearly 100% distrib- uted in the soil layer of 0-10 cm. No significant difference on mean diameter and length of 2 a rhizome, mean length of joint and buds on 2 a rhizome was found among different soil layers. And length, number and buds of 2 a rhizome had sig- nificant difference or very significant difference among two soil layers. There was no significant difference on mean diame- ter, buds, length of 3 a rhizome, mean length joint and number of bud of 3 a rhizome between two soil layers, and signifi- cant difference on number rhizome and joints, length of 3 a rhizome was found between two soil layers.

关 键 词：紫竹 地下鞭系 垂直分布 竹鞭年龄 

分 类 号：S795[农业科学—林木遗传育种]