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本篇就中国习見33种竹材的纤維形态結构,进行比較观測和分級,以判别纤維原料貭量之高低;同时測定組織分子的比量和基本密度,亦为評定其是否适于經济利用的关鍵性問題,此于制浆工业及竹种推广繁殖,均具有重要意义。 綜合分析結果,33种竹材纤維平均长为2.5毫米,平均寬为13微米,其长度平均值,介于針叶树材与闊叶树材之間,但其寬远不及針叶树材,因是竹材纤維特别纤細,此可以从长寬比的数值显示出来。竹材长寬比在115—290之間,尤以150以上者居多数。竹材壁厚腔径比,均大于1,这对于制浆时不同壁厚浆粕配合率有极重要参考价值。此外竹材纤維比量,因竹种不同,虽有高低,然都在30％以上。根据这些指标,按照制浆要求将,33种竹材分为四級,以供作制浆时抉择竹种的有力依据。
This article examines the fiber morphological structure of 33 bamboo species in China, and compares and observes grading to determine the amount of fiber material. It also measures the ratio and basic density of tissue molecules, as well as assessing whether it is suitable for economic use Of the key issues, which in the pulp industry and bamboo species to promote reproduction, are of great significance. According to the results of the comprehensive analysis, the average length of 33 kinds of bamboo fibers is 2.5 mm and the average width is 13 μm. The average length of bamboo fibers is between that of coniferous and broad-leaved trees, but it is far less than that of coniferous trees because bamboo fibers are particularly slender This can be shown by the aspect ratio value. Bamboo aspect ratio of 115-290, especially in the majority of 150 or more. Thickness ratio of bamboo wall thickness, both greater than 1, which is different for the wall thickness of pulp with pulp blending rate has an extremely important reference value. In addition, the bamboo fiber ratio, due to different bamboo species, although the level, of course, are more than 30%. According to these indicators, in accordance with the requirements of the pulp, 33 kinds of bamboo is divided into four, for the selection of bamboo species for a strong basis for pulp.