【摘要】 利用磁场处理选铁矿尾矿作为土壤磁性改良剂施入土壤,对磁化尾矿的改土效果及其环境生态效应进行了初步探讨。结果表明,施用11.25t/ha磁化尾矿可促进大豆增产,且以3000—4000GS磁场强度处理的尾矿效果较好。施用磁化尾矿能改善红壤结构,增加红壤水稳性团聚体含量,提高红壤团聚体的稳定性,大于0.01mm微团聚体含量也显著增加,降低红壤酸度。更多还原

【Abstract】 This paper deals with the effects of magnetized iron ore tailings on the properties of red soils, crop growth and its ecological environment significances.Results showed that application of magnetized iron ore tailings in red soils increased the soybean yield the amount of waterstable aggregates, especially in 1—0.5 and 0.5—0.25mm aggregates and>0.01mm microaggregate, reduced the aggregate breakage and soil acidity. The low cost and dosage of magnetized iron ore tailings used as soil amendments provided a new way for the agricultural utilization of industrial and ore solid refuses resources.更多还原