两种萝芙木生物量分配与估测模型研究

采用样本全收获法测量催吐萝芙木（Rauvolfia vomitoria）和萝芙木（Rauvolfia verticillata）的生物量，比较它们的生长特性及生物量分配，同时以基径（d）和株高（h）的组合d^2h为变量与各器官以及单株总生物量进行估测模型的建立。结果表明，两个种生物量间差异非常大，前者明显高于后者。在各自生物量构成中，茎所占的比例最高，为60％左右；而主要药用部位根只占27％左右。所建立的模型中除萝芙木叶以外，其余的判定系数R^2都较高，模型具有一定的适用性，所建立的估测模型可应用于这两个萝芙木种的幼龄植株生物量估测。

Biomass Allocation and Biomass Estimation Models of Rauvolfia vomitoria and Rauvolfia verticillata (Apocynaceae)

A field experiment was conducted to research biomass allocation and estimation models of Rauvolfia vomitoria and Rauvolfia verticillata, in Xishuangbarma, Yurman Province. Biomass measurement was conducted with harvest method, and estimation models were set up by following equations： linear, logarithmic, binomial, and power models. The results showed that the biomass between these two species is obvious, R. vomitoria is higher than R. verticillata, and sterns have the highest proportion to the whole plant, roots come next, and leaves lowest. The estimation coeffcients （ R^2 ） were high and the models had certain applicability.