为污染金属的土壤的植物救治的装饰植物的使用是一种新选择。一个壶实验被执行估计修正案的申请的效果,即,猪粪肥,水杨酸酸( SA )和钾氯化物( KCl )在生长上,镉( Cd )和在污染土壤上种的装饰葵花(向日葵 annuus L.)的锌( Zn )的举起和 translocation 。三个修正案增加了葵花高度,花直径,和生物资源。粪肥显著地减少了在葵花的 Cd 和 Zn 集中,并且因此减少了 Cd 和 Zn 的 bioaccumulation 系数(BCF ) 。然而,显著地 KCl 使用在葵花和 Cd 的 BCF 增加了 Cd 集中。另外,猪粪肥和 KCl 申请从根增加了 Cd 和 Zn translocation 到未葬部分。猪粪肥和水杨酸酸在葵花的花减少了 Cd/Zn 比率,当 KCl 显著地增加了 Cd/Zn 比率时。关联分析证明在葵花的根的 Cd/Zn 比率被 K/Na 比率在根影响并且玷污可得到的钾(K) 集中。装饰葵花能用 KCl 申请在污染 Cd 、污染 Zn 的土壤作为其他的植物被种得到在环境、经济的兴趣之间的平衡。
Use of ornamental plants for phytoremediation of metal-contaminated soil is a new option. A pot experiment was carried out to assess the effect of application of amendments, i.e., swine manure, salicylic acid (SA) and potassium chloride (KC1), on the growth, uptake and translocation of cadmium (Cd) and zinc (Zn) of ornamental sunflower (Helianthus annuus L.) grown on a contaminated soil. The three amendments increased sunflower height, flower diameter, and biomass. Manure significantly decreased Cd and Zn concentrations in sunflower, and thus decreased the bioaccumulation coefficient (BCF) of Cd and Zn. However, using of KC1 markedly increased Cd concentrations in sunflower and the BCF of Cd. Additionally, both swine manure and KC1 application increased Cd and Zn translocation from root to aboveground part. Swine manure and salicylic acid reduced the Cd/Zn ratios in flower of sunflower, while KC1 significantly increased the Cd/Zn ratios. Correlation analysis demonstrated that the Cd/Zn ratio in the root of sunflower was affected by K/Na ratio in root and soil available potassium (K) concentration. Ornamental sunflower could be grown as an alternative plant in the Cd- and Zn-contaminated soil with KC1 application to get the balance between environmental and economic interests.