土壤改良剂对南方酸性菜园土重金属汞、砷有效态含量的影响

Effects of three different modifiers on the content of available Hg,As in acid soil of south of china′s vegetable field

通过田间试验,研究了石灰、钙镁磷肥和有机肥对酸性土壤中汞、砷有效态含量的影响,结果表明,适量石灰对土壤中的有效态汞有明显抑制作用,但用量过多则改良效果降低;钙镁磷肥和有机肥对土壤中的有效态砷抑制作用明显,但施用时要注意有机肥本身的重金属含量,以免造成二次污染。

Adopt field experiment to test the effect of Limestone, Fused calcium-magnesium phos-phate and organic fertilizer on the content of available Hg＆As in acid soil of south of china＇s vegetable field.The result showed that limestone could extremely reduce the content of available Hg, fused calcium-magnesium phos-phate and organic fertilizer could limited the content of available As obviously.