Method for promoting nitrate reduction in soil

The invention discloses a method for promoting nitrate reduction in soil. According to the method for promoting the nitrate reduction in the soil, research shows that a potential gradient is generatedfrom a cathode to an anode after voltage treatment, so that reducing microorganisms of nitrate are enriched and the process of dissimilatory reducing of the nitrate to ammonium and denitrification isstrengthened significantly, and end products are NH4 and N2. The increased nitrogen content in the form of N2O, N2 and ammonium is equivalent to the content of nitrogen lost by nitrate under the voltage treatment. The results demonstrate that electrical potential can enhance the nitrate reduction in the soil through denitrification and DNRA. The invention provides a targeted and environment-friendly technology to enhance the nitrate reduction of microorganisms under the roots of crops, thereby reducing the risk of nitrate leaching. 本发明公开了种促进土壤中硝酸盐还原的方法，本发明研究显示电压处理之后从阴极到阳极产生了个电势梯度，使得硝酸盐还原微生物富集，并显著了加强了硝酸盐异化还原成铵和反硝化的过