According to its yearly developmentalrhythm, the root system is partial renewal type and withering not only absorb roots but also fine branches.
就其年发育节律而言，属局部更替型，其特点为不限于吸收根而是全部细侧根参与更替。
2
It is well known that the developmental inherent rhythm occurs during the development of secondary vascular tissue. Synchronously, the cell ergastic substance shows dynamic changes.