广西4种丛生竹基本特性的研究

Characteristics of four sympodial bamboos in Guangdong Province

以广西壮族自治区4种丛生竹:撑篙竹、花吊丝竹、粉单竹和马蹄竹为研究对象,探索其横切面维管束分布特征以及主要物理力学特性。结果表明,粉单竹维管束分布较为紧密,维管束密度最大,撑篙竹、花吊丝竹维管束分布较为分散,马蹄竹维管束密度最小;粉单竹的基本密度、气干密度和全干密度,以及力学特性在4种丛生竹中最大,其次是花吊丝竹,撑篙竹与马蹄竹物理力学特性相近。研究发现,粉单竹材性最好,可进行工业化加工利用,花吊丝竹、撑篙竹及马蹄竹可分离出竹青部分再进行高效加工利用。

Four sympodial bamboos, Bambusa pervariabilis, Sinocalamus minor, Lingnania chungii and Bambusa lapidea, in Guangxi Zhuang Autonomous Region were chosen to study the distribution characteristics of transection and the essential physical and mechanical properties. Results showedthat the vascular bundle distribu- tion ofL. chungii was the tightest and that orB. lapidea was incompact. L. chungii had the highest vascular bundle density, basic density, air-dry density, dry density and the best mechanical properties, followed by S. minor. The physical and mechanical properties ofB. pervariabilis were similar to those ofB. lapidea. According to the results, L. chungii that has the best properties could be directly used for the industrial utilization, while the rest of sympodial bamboos should wipe off the inner part of culm wall before the industrial utilization.