施肥对毛竹竹材物理力学性质的影响  

Effects of fertilization on physical and mechanical properties of Phyllostachys edulis timber

作　　者：杨清平[1] 林华[2] 郭子武[1] 李迎春[1] 洪宜聪 陈双林[1] 

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]福建省沙县林业局,福建沙县365500

出　　处：《中南林业科技大学学报》2013年第8期28-31,共4页Journal of Central South University of Forestry & Technology

基　　金：中央财政林业科技推广示范资金跨区域重点推广示范项目“毛竹林生态安全高效培育技术示范”([2010]TK025);国家星火计划项目“闽中毛竹林生态高效经营技术集成与示范”(2012GA720007)

摘　　要：采集4种不同施用化学肥料历史的毛竹林3度标准立竹,对竹材物理力学性质进行了比较分析。结果表明:在试验毛竹林施肥年限内(10 a),不同施肥措施毛竹林竹材气干密度和绝干密度差异并不显著,而长期施用速效氮肥会显著降低竹材基本密度。施肥对毛竹竹材干缩性会有一定的影响,长期施用速效氮肥明显提高了竹材体积干缩率、纵向干缩率、弦向干缩率和径向干缩率。长期施用速效氮肥会显著降低竹材抗弯强度。总体而言,长期施肥会对毛竹竹材物理力学性质产生负面影响,尤其是长期施用速效氮肥。By taking 3-degree standard bamboo ofPhyllostachys edulis, which were applied with four kinds of chemical fertilizers, as the tested materials, the physical and mechanical properties of four tested bamboo wood were determined and compared. The results show that under the conditions of continuous fertilization for ten years, the differences of air dry density and absolute dry density of P. edulis wood among with different fertilization measures were not Obvious, the base density of bamboo timber would decrease remarkably if the quick-acting nitrogen fertilizer was long-term used on the P. edulis stand; the shrinkage of bamboo timber would be occured if fertilizer was used on P edulis stand, The shrinkage percent of volume, axial shrinkage, tangential shrinkage, radial shrinkage of the bamboo timber at air-dried condition would increase obviously if quick-acting nitrogen fertilizer was long-term used on the bamboo stand. The bending strength of bamboo timber would decrease remarkably if quick-acting nitrogen fertilizer was long-term used on the P. edulis stand. As a whole, the negative effects on the physical and mechanical properties of bamboo timber would come into being if fertilizing longtime, especially quick-acting nitrogen fertilizer was chronically used on P. edulis stand.

关 键 词：毛竹 竹材 物理性质 力学性质 施肥 

分 类 号：S795.7[农业科学—林木遗传育种]