土壤改良剂对废弃离子型稀土矿酸性砂化土壤改良效果研究

Study on soil modifier improvement on acid sanding of waste ionized rare earth minerals

针对离子型稀土矿土壤酸性砂化的问题,选用贝壳粉、植物黏合剂、有机肥复配进行土壤改良剂研究,探讨土壤改良剂对酸性砂化土壤的作用机制。结果表明,添加改良剂土壤的pH值提升至6.5,有机质、全氮、有效磷、速效钾含量均不同程度提高,SEM表征表明添加土壤改良剂,土壤颗粒黏结较好,土壤呈团粒结构。土壤改良剂有效改善了矿区生态环境,为植物生长提供了环境和养分,具有良好的环境效益和社会效益。

Based on the problem of acid sanding of soil of ionic rare earth minerals,shell powder,plant binder and organic fertilizer were chosenas soil modifiers,to discussthe mechanism ofaction of modifier for acid sanding soil.The results indicated that pH of the soil with the modifier increased to 6.5,organic matter,total nitrogen,available phosphorus and available potassium all increased to different degrees.SEM images indicated that the soil particles bonded well,and the soil showed a granular structure.Soil modifier can effectively improve the ecological environment of mining area,provide a good environment and nutrient for plants to grow,and has good environmental and social benefits.