土壤重金属镉、铅、锌胁迫对小白菜生长状况的影响

[目的]采用添加外源重金属和盆栽试验的方法,研究土壤重金属胁迫对小白菜生长状况及生物量的影响.[方法]通过对土壤添加外源Cd、Pb、Zn进行室内盆栽试验,设置不同浓度的胁迫试验,研究不同浓度重金属胁迫作用下小白菜生长状况和生物量的影响.[结果]在生长初期,Cd、Pb、Zn胁迫对小白菜生长并未表现出明显抑制作用,小白菜生...

Effects of Cadmium,Lead and Zinc Stress on the Growth of Pakchoi in Heavy Metal Contaminated Soil

[Objective]The effects of cadmium(Cd),lead(Pb)and zinc(Zn)stress on the growth and biomass of pakchoi were studied by adding exogenous heavy metals and pot experiments.[Method]Adding exogenous heavy metal through soil,different concentration of stress experiments were set to measure the influence of growth and biomass on cabbage.[Result]The results showed that Cd,Pb and Zn stress did not show significant inhibition in the early growth stage of pakchoi.The middle and late growth stages of pakchoi were sensitive to Cd,Pb and Zn stress.Low concentrations of Cd,Pb and Zn stress did not significantly inhibit the growth of pakchoi,but had an important effect on the water content of pakchoi.With the strengthening of stress,the water content of pakchoi decreased significantly,indicating that heavy metal stress significantly inhibited the absorption of soil water by pakchoi.[Conclusion]The results could provide references for soil remediation,application and cultivation.