本研究以台灣產之五竹種為材料，以節間長、稈徑、稈厚度、纖維率與機械強度來評估竹種之工藝利用價值以為利用依據，重要結果摘要如下：1.節間長度以稈基部最小，增大至一定高度後逐漸遞減。節間長度與節間數呈顯著以上之二次曲線相關。2.稈徑與厚度由基部往梢部呈直線狀遞減。以間長、稈徑、稈厚度等稈形質因子來綜合評估竹種，其中以莿竹之釋形質最優，孟宗竹居次，剛竹又稍優於火管竹，麻竹之稈形質最差。3.以纖維率分布均句性來評估竹種，則以莿竹最佳，孟京竹又較麻竹佳，火管竹與剛竹之分布率最不均勻，纖維率分布均勻性在工藝利用價值上係一重要之指標。4.五竹種之比重與纖維率不具相關性，顯見竹種間之織維細胞性質具甚大之差異性，纖維率與機械強度的關係無一致性
Five bamboo species were selected as experimental materials and evaluated the technological utilization valueby means of some factors including internode length, culm dia meter, culm wall thickness, the distribution of fiber content, and mechanical strength. ResuIts are summerized as foIlows: National Chiayi Institute of Agriculture. 1. The variation of internode length shows the smallest value at the base of culm and then increases to the certain level of height. After this, internode length decreases with the height of culm to the top. Significant curve correlation exists between internode length and internode number above ground. 2. Culm diameter and culm wall thickness decrease linearly with the height. Using culm factors of internode length, culm diameter and culm wall thickness to evaluate synthetically the culm forms of five bamboo species, the culm form in sequence is BS ＞ PP ＞ PB ＞ BD ＞ DL. 3. The even distribution of fiber content which plays an important role of technological utilization was used to evaluate the quality of bamboo culm. The result is BS ＞ PP ＞ DL ＞ BS ＞ PB. 4. No significant relationship between specific gravity and fiber content for five bamboo species that reveals clear difference among fiber properties of different bamboo species. The relationship between mechanical strength and fiber content shows low consistency.
