Study On The Law Of Plants Absorbing Heavy Metals In The Soil

The law of plants absorbing two typical heavy metals in the soil was preliminary researched through the experiment cultivated in a pot. The four seasons Chinese cabbage and shanghaiqing were selected as experimental plants in the experiment. The Cu2+ ,Pb2+ and NaHCO3 were added into the soil in order to study the influence of the plant absorbing the heavy metals which includes the concentrations of Cu2+ ,Pb2+ ,NaHCO3 and the complex pollution of Cu2+ and Pb2+. The experimental results show that the concentrations of Cu2+ ,Pb2+ in the root of the four seasons Chinese cabbage and shanghaiqing are larger than that in the leaf and stem of the four seasons Chinese cabbage and shanghaiqing. Cu2+ and Pb2+ are absorbed mainly by the root of the four seasons Chinese cabbage and shanghaiqing. The influence of the four seasons Chinese cabbage and shanghaiqing absorbing Cu2+ and Pb2+ in the case of the respective pollution of Cu24 and Pb2"1" is different when the four seasons Chinese cabbage and shanghaiqing are in the soil polluted by Cu2+ and Pb2+ together. The ability of the four seasons Chinese cabbage and shanghaiqing absorbing Cu2+ and Pb2+ can be changed by adding NaHCO3 in the soil.