以前我们曾经说明,橡胶草根内橡胶在生长的第一年,开始时形成低的聚合物。当植物生长,橡胶含量百分数和分子量逐步增加,在冬季开始时达到最高值。橡胶草第二年的发育,由於形成根鞘的原因是与第一年不相同的。橡胶草根内橡胶的质和量的测定,分别为根的新组织,根鞘以及整个根(包括根鞘),两年的橡胶草根的取样是在以下时期: Previously we have shown that the rubber inside the rubber grass roots in the first year of growth, the beginning of the formation of low polymer. As the plant grows, the rubber content percentage and the molecular weight increase gradually, reaching the highest value at the beginning of the winter. The second year of rubber grass development, due to the formation of the root sheath is not the same as the first year. Determination of the quality and quantity of rubber in the rubber grass roots, respectively root new tissue, root sheath and the entire root (including the root sheath), two-year sampling of rubber grass roots in the following period: