论文部分内容阅读
探讨了Ｌａ，Ｃｅ，Ｎｄ，Ｐｒ４种单一稀土处理油菜种子，在不同程度Ｃｄ污染土壤上种植后，对油菜生长发育及吸Ｃｄ量的影响。结果表明，Ｃｅ抑制油菜吸收重金属Ｃｄ效果最佳，其次为Ｌａ，随土壤Ｃｄ污染程度加重，Ｎｄ，Ｐｒ对油菜吸收Ｃｄ也表现出一定的抑制效果，同时均不同程度地提高了干物质产量。影响Ｃｄ累积率降低幅度大小顺序为：Ｃｅ＞Ｎｄ＞Ｌａ＞Ｐｒ。
The effects of single Rare Earth (La, Ce, Nd, Pr) treatments on rapeseed (Brassica campestris ssp. The results showed that Ce inhibited the rapeseed Cd absorption best, followed by La, with the increase of soil Cd pollution, Nd, Pr on rapeseed Cd also showed some inhibitory effect, at the same time to varying degrees increase the dry matter production. The order of magnitude of decrease of Cd accumulation rate was Ce> Nd> La> Pr.