江西杉木木材纤维形态及化学成分研究(Ⅰ)

Studies on the Fiber Shape and Chemical Composition of the Wood of Cunninghamia lanceolata in Jiangxi Province

:以江西省不同产地的杉木木材为研究对象 ,进行了纤维形态和木材化学成分分析。结果表明 :1 )不同产地纤维平均长度均在 1 .77mm以上 ,长宽比均大于 50。不同产地之间存在一定差异。 2 )不同部位平均纤维长的规律是中部最长 ,下部次之 ,上部最短。 3 )化学成分中 ,纤维素及木质素含量较高 ,戊聚糖及其他化学成分含量较低。不同产地的杉木纤维素及戊聚糖含量存在较大差异。

The fibe shape and chemical composition of the wood of Cunninghamia lanceolata of various growing areas in Jiangxi Province have been determined. The rusults are as follows: (1)The fiber lengths are all more than 1.77mm, and the length-breadth ratios are all more than 50, but there is a degree of difference among different samples. (2)There is difference in fiber length in different parts of all the samples, the longest is in the middle part of the wood, the middle is in the lower part, and the shortest is in the upper part. (3)The contents of cellulose and lignin are all high in the samples, but the contents of polypentaglucose and other chemical composition are low. There is a great degree of difference in contents of cellulose and polypentaglucose among different samples.