棉秆的解剖特性及化学成分研究

对棉秆的解剖特性和化学成分进行系统测定和分析,为棉秆在人造板工程中的利用提供参考。借助光学显微镜对棉秆的显微构造进行了详细的观察和分析,着重应用定量解剖学和显微图像分析技术,研究了棉秆的解剖特征。并参照国家标准对棉秆的化学成分进行了测定。研究结果表明,棉秆纤维形态较好,平均纤维长度为742.7μm,纤维长宽比为37.66,纤维比量为77.28%。棉秆木质部和棉秆皮部的化学组分有明显不同。与棉秆木质部相比,棉秆皮部的各种抽提物含量、综纤维素含量、灰分含量更大,聚戊糖的含量更低。

Anatomical Characteristics and Chemical Components of Cotton Stalk

The anatomical characteristics and chemical components of cotton stalk were examined to provide reference for the application of cotton stalk in wood-based panels engineering.The microscopic structure of cotton stalk was observed and analyzed by using optical microscope.Some approaches of quantitative anatomy,microscopic image analysis were used to explore the anatomical properties of cotton stalk.Chemical components were measured based on the China national standards.The results showed that the structurew of cotton stalk were similar to the broad-leaved wood,and fiber shape was good.The mean of fiber length,ratio of fiber length to width and ratio of fiber were 742.7 μm,37.66 and 77.28%,respectively.The chemical components of the cortex and xylem of cotton stalk were very different.Compared with the xylem,the cortex had higher extractives,holocellulose,and ash,while pentosan content was lower.