The result of test showed that the content of N, P, K and Ca in root, stem and leaf of Phoebe bournei seedling was different, and the leaf contained the most.

 
  • 试验结果表明,闽楠苗木根、茎及叶中的N、P、K和Ca的含量存在着显著差异,其中叶片中各种元素的含量最多。
今日热词
目录 附录 查词历史