| 摘要: |
| 本项试验对尤金杨等九种引种杨树木材的纤维长度、宽度、纤维细胞壁厚度及胞腔直径进行了足够数量的测定,并由此四项均值计算出纤维的长宽比、壁厚腔径比,以及纤维长度、宽度的分布和频率。此外还测量了各树种木材分子的组织比量。根据实测结果和统计计算,就九种杨树木材纤维对制浆造纸的适宜性作了对比和分析。分析结果认为九种杨树的纤维长度,除箭河小杨属短级外,其余皆为中级长度。而纤维宽度差异并不显著,平均在20.68～25.71微米之间,最大差异仅为5.03微米。纤维长度、宽度的分布和频率,显示其最大分布和最大频率基本一致。文章根据各树种木材纤维的长度和宽度计算出的长宽比表明,九种杨树的长宽比为40.29～52.70,皆大于制浆造纸生产过程中为保证纤维能良好地交织在一起所要求的35～45比值。纤维细胞壁厚腔径比(2w/1)亦皆小于1,属朗克尔第一级。各树种木材的纤维含量在68.6%～73.7%之间,远远大于50%。纵观九种杨树木材纤维形态值,虽均合乎制浆造纸要求,然结合其生长速度、木材性质综合考虑,作者认为尤金杨、健杨、德国158号杨、欧美杨、合作杨及撒尔红杨等六种杨树,更适宜于作为制浆造纸原料的树种。 |
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| Research on wood-firbe Morphological Value of Nine Kinds of Populars-Populus×euramericana(Dode) Guinier cv "Eugenei" Etc. And Their Suitability of Paper-pulp for Paper-making |
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| Abstract: |
| This test determined the fibre length and width/width of fibre cell walls/cell diameters of popular wood of nine introduced species of Populus×euramericana(Dode) Guinier cv "Eugenei" Etc.in great quantities.As a result,ratio between fibre length and width/that between cell walls and cell diameters/distribution and frequency of fibre length and width were calculated from the above four mean values.In addtion,the quantities of tissue ratio of wood moleculars of individual tree species were determined. Based on the results of actual determination and statistical calculation,the comparison and analysis were made of making paper-pulp for paper-making from wood fibres of nine kinds of popular trees.The results from analysis indicated that the fibre length of nine kinds of popular trees,except the shortest fibre length of Populs nigra Var. thevestina ×P. hopeiensis +P.simonii,are all the medium length without obvious differences in fibre width,being 20.68 Micron with the maximum difference being 5.03 Micron.The distribution and frequency of fibre length and width showed that the maximum distribution coincided with the maximum frequency. Based on the ratio between length and width calculated from wood fibre,the paper indicated that the ratio between length and width of nine kinds of popular trees was 40.29-52.70,which was greater that the ratio of 35-45 required in making paper pulp process for paper-making,but the ratio of 35-45 was required to ensure better weaving of fibres.The ratio between thickness of fibre cell walls and cell diameters (2w/l) if smaller that 1,belonging to the first class of R.O.H. Ruaker.The fibre contents of wood of various popular tree species were between 68.6 percent to 73.7 percent,being far greater than 50 percent. In a comprehensive survey of wood fibre morphological values of nine kinds of popular tree species,although they meet the needs of making paper pulp for paper-making,the autors hold that the six kinds of popular trees such as Populus×euramericana(Dode) Guinier cv "Eugenei" /Populus×euramericana(Dode) Guinier cv "Robusta"/Populus×euramericana(Dode) Guinier cv "Graupaer-Selktion No.158." /Populus×euramericana(Dode) Guinier/Populus"sopera"/Populus×euramericana(Dode) Guinier cv "Sarce Rouge" are more suitable popular tree species to be used in making paper pulp for paper-making in taking into comprehensive consideraion of their fast growth and wood qualities in combination. |
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