无患子幼龄林林分存在显著的个体分化,变异程度表现为：冠幅〉地茎〉株高〉枝条,且各表型性状间存在显著的相关性;植株总生物量构成为：根生物量占26.00%、茎生物量占68.32%、叶生物量占5.67%;通过逐步回归,建立了无患子植株总生物量与地径、株高、冠幅的回归模型为：y=612.2606＋91.6329x1-72.88x2-87.1238x3,相关系数r=0.9825,说明以无患子的地径、株高以及冠幅为选择因子开展个体生物量评价,可以实现以总生物量为最终目标的评价与选择效果。%Among the young forest of Sapindus mukorossi Gaertn,there is significant individual variation,and the differentiation degree is canopy widthsground diameter plant heightbranch number.Among phenotypes,there exists significant correlation.The plant total biomass consists of the root biomass accounting for 26.00%,stem biomass accounting for 68.32%,and leaf biomass accounting for 5.67%,and stem is the main harvest part of biomass.Through stepwise regression,the regression model of S.mukorossi Gaertn＇s total biomass to ground diameter,plant height and canopy widths has been set up,the regression model is： y=612.2606＋91.6329x1-72.88x2-87.1238x3.The correlation coefficient r is 0.9825,which illustrates that conducting individual biomass evaluation by the selective factors of S.mukorossi Gaertn＇s canopy widths,ground diameter and plant height can realize the effect of evaluation and selection through the final goal of total biomass.
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