互花米草化学性质和纤维形态分析

Analysis on Chemical Properties and Fibre Morphology of Spartina aherniflora

对不同生长时期的互花米草的化学性质和纤维形态进行测定与分析,结果表明:随生长期的增长,互花米草综纤维素与木质素含量逐渐增加,而各种抽出物含量呈减少趋势,成熟的互花米草综纤维素含量与马尾松木材相近。秆部位的综纤维素和木质素含量最高;互花米草原料pH值呈中性或弱碱性,秆部位酸碱缓冲容量最低,梢部位则较高;互花米草秆部位的表皮和叶部位二氧化硅含量较高。互花米草纤维属于中等长度纤维,纤维大小等级为细。

Chemical properties and fibre morphology of Spartina aherniflora during different growth periods were determined and analyzed in this paper.The results showed that the content of cellulose and lignin of Spartina aherniflora increased,and the content of extractives decreased with the growth time going on.The content of cellulose of the mature spartina aherniflora was similar to Masson pine wood.The cellulose content and lignin of the stalk were the highest in each part of Spartina aherniflor.The pH value of spartina aherniflora was neutral or slightly alkali.The capacity of Acid-based buffering was minimum in the stalk,and maximum in the tip.The content of SiO2 was higher in the surface of the stalk and in the leaf.According to fibre morphology,the fibre length level of Spartina aherniflora was medium,and fibre size level was fine.