腐殖酸对土壤挥发汞植物有效性的影响研究

Effect Study of Humic Acids on Volatilization of Hg from Soil in Plant

土壤挥发汞对植物是非常有效的 ,并能通过食物链威胁人体健康 ,因此 ,本试验设计了“密闭箱的水培试验”定量研究了腐殖酸及其组份对土壤挥发汞生物活性的影响。结果发现 :腐殖酸能有效地抑制土壤汞的挥发 ,降低植株对土壤挥发汞的吸收。其作用机理在于土壤挥发汞的形态转化。通过对转化条件的调节 。

The effect of HAs on the bioavailablility of volatile Hg was investigated by using 'plant cultivation with Hogland solution in hermetically box' experiment.Results showed that HAs and its components could efficiently restrain the volatilization of Hg from soil.Thus result in a lower Hg accumulation in plant and significant improvement on the quality of leafy vegetable.