CAJ | 학술논문

结合树干解析取样，借助光学显微镜和扫描电镜，分别从宏观角度和微观角度研究了广玉兰木材的解剖构造；利用木材万能力学试验机，参照现行国家标准对广玉兰木材的力学性质进行了测定和分析。结果表明：广玉兰木材属于散孔材，管孔为圆形、椭圆形，多数为复管孔；轴向薄壁组织量较多，为傍管类的环管束状，且多数为全部包围；木射线纺锤形，多为同型多列，偶有异形射线。广玉兰木材基本密度随着树干高度的增加整体上呈下降趋势，最大基本密度值出现在胸径处，为0．47 g／cm3。广玉兰木材端面硬度、径面硬度、弦面硬度、顺纹抗压强度、顺纹抗拉强度、抗弯强度和抗弯弹性模量分别为4．87 kN、3．84 kN、4．26 kN、35．02 MPa、114．97 MPa、83．30 MPa和10500 MPa，为高档用材。
결합수간해석취양，차조광학현미경화소묘전경，분별종굉관각도화미관각도연구료엄옥란목재적해부구조；이용목재만능역학시험궤，삼조현행국가표준대엄옥란목재적역학성질진행료측정화분석。결과표명：엄옥란목재속우산공재，관공위원형、타원형，다수위복관공；축향박벽조직량교다，위방관류적배관속상，차다수위전부포위；목사선방추형，다위동형다렬，우유이형사선。엄옥란목재기본밀도수착수간고도적증가정체상정하강추세，최대기본밀도치출현재흉경처，위0．47 g／cm3。엄옥란목재단면경도、경면경도、현면경도、순문항압강도、순문항랍강도、항만강도화항만탄성모량분별위4．87 kN、3．84 kN、4．26 kN、35．02 MPa、114．97 MPa、83．30 MPa화10500 MPa，위고당용재。
We studied the Magnolia grandiflora L.wood on the anatomical structure and their properties by using the optical mi-croscope, scanning electronic microscopic and universal mechanical testing machine.The M.grandiflora L.wood is dif-fuse-porous wood,the vessel is round or oval , and most was complex vessel.There are many longitudinal parenchyma, which is the paratrachealclass ring pipe bundle, and most are around.Wood ray is homeotype ray.The basic density of M. grandiflora L.wood is decreased with the stem height increasing, the maximum basic density of 0.47 g/cm3 is in the diam-eter at breast height. The wood end hardness, diameter surface hardness, the chord surface hardness, the compressive strength parallel to grain, tensile strength parallel to grain,the bending strength and the elasticity modulus of M.grandiflo-ra L.wood are 4.87 KN, 3.84 KN, 4.26 KN, 350.2 MPa, 114.97 MPa, 83.30 MPa and 10 500 MPa, respectively.The M. grandifol ra L. wood belongs to high-grade timber.