油仔(Keruing, Apitong)

 

一般性質

中文商用名稱：油仔

學名：Dipterocarpus spp.

英文商用名稱：Kerung, Apitong

科名：龍腦香科(Dipterocarpaceae)

其他參考名稱： 阿匹棟
產地 : 印度、巴基斯坦、泰國、寮國、越南、印尼、柬埔寨

解剖性質

[一般及肉眼下特徵]
1.生長輪不明顯，邊心材區別不明顯，材色為赤褐色或暗褐色。
2.橫切面上容易見到樹脂滲出痕跡。

3.氣乾比重中至重(0.58–0.8 g/cm³)。

 

[放大鏡下特徵]
1.散孔材，管孔單獨排列，孔徑大而明顯。弦向徑110-285µm，密度 2–4/mm²
2.導管內具填充體但不多。
3.縱向薄壁細胞散生、圍孔、翼狀或短切線狀排列。
4.縱向樹脂溝散生或弦向並列，不具同心圓狀排列，此可與冰片木區隔。

用途
可供室內建材、家具、合板等。

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Gernaral Properties
1.Scientifitic name: Dipterocarpus spp.
2.Commercial name: Kerung, Apitong
3.Family: Dipterocarpaceae
4.Geogrphy distribution: India, Pakistan, Sri Lanka, Burma, Thailand, Laos, Vietnam, Cambodia, and Indomalesia.

Anatonical Properties
[Features under Naked Eyes]

1.	Growth ring boundaries indistinct or absent.
2.	Heartwood basically brown to red brown to yellow brown to green.
3.	Basic specific gravity 0.66–0.75–0.8 g/cm³.

[Features under Magnifier or Microscope]

1.	Wood diffuse-porous. Vessels exclusively solitary. Average number of vessels/mm² 2–4. Average tangential vessel diameter 110–285 µm.
2.	Tyloses in vessels present but not much.
3.	Axial parenchyma apotracheal and paratracheal. Apotracheal axial parenchyma diffuse and diffuse-in-aggregates. Paratracheal axial parenchyma scanty and vasicentric. Axial parenchyma as strands.

Use 
Structural, plywood.