Changes in Bio-availability of Immobilized Cu and Zn Bound to Phosphate in Contaminated Soils with Different Nutrient Addition
不同养分对磷酸盐固定的污染土壤中铜锌生物有效性的影响

Bio-availability of Cu and Zn fixed by phosphate in contaminated soils with application of nutrients were measured by pot experiment. It was simulated for the third national standardization of copper and zinc polluted soils by adding copper and zinc nitrate into red and paddy soils,respectively and together. Phosphate amendment was added to the soils to fix Cu and Zn,then added KCl and NH4Cl or K2SO4 and (NH4)2SO4 fertilizers following to plant Ryegrass,which was harvested after 40 d. Available Cu/Zn conten...