无性系桉树纤维原料的研究

A investigation on the fiber morphology of the clone eucalyptus

对不同种植地、不同海拔的4个桉树品系的生长量、化学成分、纤维形态进行了研究分析。结果表明:4个桉树品系生长量较好,4.5年生每公顷平均蓄积量达到179.85m3,每公顷年均生长量为39.9m3,在桉木属制浆原料中处于中等水平;不同种植地、海拔对桉木化学成分、纤维形态有影响;对于同一品系在不同种植地,水分、密度、化学成分、纤维形态不同,在同一种植地不同海拔下抽出物、木素等几乎随着海拔增高而增高,综纤维素随着海拔增高而减少;相对而言,在4个桉木品系中,#2品种出材率、化学成分、纤维长度分析中都处于弱势。

The amount of growth, chemical composition and fibre morphology of four types of eucalyptus of different planting areas and different altitudes were analyzed. The results show that the amount of growth of the four types of eucalyptus is preferable： the average amount of growing stock per hectare is 179.85m^3, the average annual amount of growth per hectare is 39.9m^3, being in the medium-scale among the wooden pulping raw materials; the planting area and altitude have an influence on the chemical composition and fibre morphology of eucalyptus; for the same type of eucalyptus, the varieties from different planting areas have different moisture, density, chemical composition and fibre morphology; for those from the same planting area, the varieties of different altitudes, the extracts and lignin increase with the increase of the altitude and the holocellulose decreases with the increase of the altitude; comparatively speaking, eucalyptus No.2 is inferior in recovery, chemical composition and fibre length analysis among the four varieties