硅酸盐土壤调理剂对蔬菜Cd污染的治理效果

摘要

The objective of this study was to explore the governance effect of silicate soil conditioner on four cadmium-contaminated vegetables.The results showed that silicate soil conditioner increased soil pH,but reduced the soil cadmium activity and cadmium accumulation in vegetables,which indicated that the silicate soil conditioner was relatively good.The recommended dosage of silicate soil conditioner was 9 000 kg/hm2.%通过田间试验研究了硅酸盐土壤调理剂对4种蔬菜重金属Cd污染的治理效果.结果表明,硅酸盐土壤调理剂能有效提高土壤pH值,显著降低土壤Cd活性及蔬菜对Cd的积累量,治理效果相对较好,是防治蔬菜重金属Cd污染的优选土壤调理剂,硅酸盐施用量以9 000 kg/hm2为宜.