对吐鲁番－哈密等盆地１００多块煤样有机岩石学分析表明：新疆早中侏罗世煤中普遍含有木栓质体．木栓质体在煤有机显微组分中所占比例仅以木栓化细胞壁计．一般在２％以下，若包括木栓化细胞壁和充填在胞腔中的团块镜质体两部分则最高可达２０％．在镜质体反射率０．３５％～０．７０％时，木栓质体光性发生明显变化，但其形态和数量没有显著变化，反映了木栓化细胞壁中木栓质和蜡质在低成熟阶段明显失去，而作为细胞壁格架的纤维素、木质化纤维素则没有显著变化．随热成熟作用木栓质体光性逐渐向结构镜质体和均质镜质体演化；至镜质体反射率０．９０％时二者已难以分辨． The organic petrologic analysis of more than 100 coal samples from the Turpan-Hami Basin shows that the early-Middle Jurassic coal in Xinjiang generally contains cork body. The proportion of cork plastids in coal organic microscopic components is only based on the corky cell wall. Generally below 2%, up to 20% if both the corky cell wall and the clumps of vitrinite filled in the cell cavity are included. At the vitrinite reflectance of 0.35% ~ 0.70%, the photosynthesis of cork plastids changed obviously, but its morphology and number did not change significantly, which showed that corky and waxy Low-maturity stages were significantly lost, whereas cellulose, which is a cell-wall framework, did not change significantly in lignocellulose. With the maturation of cork plastids phototropism gradually to the structure of the vitrinite and homogeneous vitrinite evolution; to the vitrinite reflectance of 0.90%, the two have been difficult to distinguish.