植物物料的某些化学组成分与其腐解产物很相似,迄今还没有一种方法能够把两者清楚地分别开来。这为腐解过程的研究带来了很多困难。例如,已经证明,用碱液作为提取剂时,进入溶液的不仅有腐殖物质,而且也有植物物质,因而所得到的样品不具有很 Some of the chemical components of plant material are very similar to their decomposed products and so far there is no way to clearly distinguish the two. This brings with it many difficulties in the study of the decomposing process. For example, it has been shown that when lye is used as an extractant, not only humic substances but also plant substances are present in the solution so that the resulting sample does not have very good