采用小麦悬浮细胞系研究镉、磷在细胞中的积累和分布特性及交互作用。共设置两组试验：一组设４个镉水平（０，５０，１００，１８０μｍｏｌ／Ｌ）和１个磷水平（２．５ｍｍｏｌ／Ｌ），主要研究镉对磷在细胞内积累和分布的影响；另一组设３个镉水平（０，５０，１８０μｍｏｌ／Ｌ）和２个磷水平（０．５，２．５ｍｍｏｌ／Ｌ），以研究镉、磷的交互作用。细胞在含有不同镉、磷浓度的ＭＳ培养基中处理７ｄ。结果表明，介质中镉抑制了细胞的生长，而增加磷能部分地抵消其抑制作用。细胞含镉量随外施镉浓度的提高而提高，但含磷量却随之下降。无论是低镉还是在高镉条件下，提高供磷水平均能抑制细胞对镉的积累，但大部分镉截留在细胞壁内。同时，细胞壁容纳了８５％左右的磷，表明磷在提高小麦耐镉性方面具有重要作用。 The accumulation and distribution characteristics of Cd and P in cells and their interaction were studied by using wheat suspension cell lines. A total of two sets of experiments were set up: one with 4 cadmium levels (0, 50, 100 and 180 μmol / L) and one phosphorus level (2.5 mmol / L). The effects of cadmium on intracellular accumulation and distribution of phosphorus ; The other group, three cadmium levels (0,50,180μmol / L) and two phosphorus levels (0.5,2.5mmol / L) were set up to study the interaction of cadmium and phosphorus. Cells were treated for 7 days in MS medium containing different cadmium and phosphorus concentrations. The results showed that cadmium in the medium inhibited cell growth, while increasing phosphorus partially offset its inhibitory effect. The content of cadmium in cells increased with the increase of applied cadmium concentration, but the phosphorus content decreased. Whether low cadmium or high cadmium conditions, to improve the supply of phosphorus can inhibit the accumulation of cadmium cells, but most of the cadmium trapped in the cell wall. At the same time, the cell wall holds about 85% of the phosphorus, indicating that phosphorus plays an important role in improving the cadmium tolerance of wheat.