Ambrosia trifida plant height and branch length was significantly increased with the invasion of itself, and biomass partitioning index levels in different invasion areas had no significant differences. 而三裂叶豚草的株高和分枝长显著高于三裂叶豚草未入侵地。三裂叶豚草生物量分配指标在不同入侵程度区无显著性差异。