Variation in Phenolic Compounds Content and Antioxidant Activity of Different Plant Organs from Rumex crispus L. and Rumex obtusifolius L. at Different Growth Stages

不同生长阶段皱叶酸模（Rumex crispus L.）和钝叶酸模（Rumex obtusifolius L.）不同植物器官中酚类化合物含量和抗氧化活性的变化