外源施加钙对土壤镉形态的影响研究  

Study on the effect of exogenous application of calcium on soil cadmium form

作　　者：李宛蔚 李海燕[1,2] 秦樊鑫 LI Wanyu;LI Haiyan;QIN Fanxin(School of Life Sciences,Guizhou Normal University,Guiyang 550025,China;Guizhou Key Laboratory of Plant Physiology and Developmental Regulation,Guiyang 550025,China)

机构地区：[1]贵州师范大学生命科学学院,贵州贵阳550025 [2]贵州省植物生理与发育调控重点实验室,贵州贵阳550025

出　　处：《应用化工》2024年第6期1290-1292,1297,共4页Applied Chemical Industry

基　　金：国家自然科学基金委员会-贵州省人民政府喀斯特科学研究中心项目(U1812401)。

摘　　要：为探究钙对土壤重金属Cd的影响,通过向土壤中施加四种不同的钙化物,研究钙对土壤pH、土壤Cd的生物有效性以及土壤Cd的化学形态的影响。结果表明,随着钙的施加,土壤pH值逐渐升高,土壤逐渐呈现碱性。钙的施加能够促进土壤对Cd的吸附能力,导致土壤Cd的生物有效性降低,土壤Cd形态逐渐向稳定态转变,且土壤pH与土壤钙含量、土壤可氧化态Cd及土壤残渣态Cd成显著正相关。In order to explore the effect of calcium on soil heavy metal Cd,four different calcifications were applied to the soil to study the effect of calcium on soil pH,bioavailability of soil Cd and chemical form of soil Cd.The results showed that with the application of calcium,the soil pH value gradually increased,and the soil gradually became alkaline.The application of calcium can promote the adsorption capacity of soil to Cd,resulting in a decrease in the bioavailability of soil Cd,and the form of soil Cd gradually changes to a stable state,and soil pH is significantly positively correlated with soil calcium content,soil oxidizable Cd and soil residual Cd.

关 键 词：土壤 重金属 化学形态 CD污染 

分 类 号：TQ09[化学工程]