茶树一直被认为是一种厌钙植物,这主要因为它在酸性土壤中生长比较旺盛,而在近中性土壤中生长不良。曾有过一些调查以研究茶树体内 Ca 移动问题,以及 Ca 对其它养分特别是 N 和 K 的有效性之影响。这些调查以及对根的阳离子代换量(CEC)研究都表明:在其新陈代谢习性方面,茶树象是介于单子叶植物和双子叶植物之间的一个中间型植物;在含 Ca 适量的土壤中,N 和 K 的 Tea tree has always been considered a calcium-insensitive plant, mainly because it is relatively acidic in acidic soil growth, and poor growth in near-neutral soil. There have been some surveys to study Ca movement in tea plants and the effect of Ca on the availability of other nutrients, especially N and K. These surveys, as well as studies of root cation exchange capacity (CEC), show that the tea tree is an intermediate plant between monocotyledons and dicotyledons in terms of its metabolic habits; in moderate amounts of Ca-containing soil , N and K’s