At one site Ca and Mg contents rose with senescence;at the second site there was no change with age of leaf.

 
  • 挖仔尾水笔仔叶老化时钙和镁含量增加,然而竹围水笔仔其成熟叶、老叶和掉落叶钙和镁含量则无显著变化。
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