不同碳源搭配石粉对赤泥技术新成土的形成及理化性状的影响  

The Effect of Different Carbon Sources Combined with Stone Powder on the Formation and Physicochemical Properties of Technosols from Red Mud

作　　者：张思雨 赵晨浩 王圣森[1] ZHANG Siyu;ZHAO Chenhao;WANG Shengsen(College of Environmental and Engineering,Yangzhou University,Yangzhou,Jiangsu 225127,China)

机构地区：[1]扬州大学环境科学与工程学院,江苏扬州225127

出　　处：《肥料与健康》2024年第6期111-115,共5页Fertilizer & Health

基　　金：国家自然科学基金面上项目(42277040)。

摘　　要：为实现赤泥的资源化利用,以秸秆、生物炭为碳源,在铝土矿废渣赤泥中添加纯石材粉末(石粉),探究了赤泥作为基础物料与不同碳源及石粉搭配对赤泥技术新成土理化性状的影响。结果表明:石粉搭配不同外源碳均有助于提高土壤肥力,生物炭提高技术新成土的营养效应比秸秆更明显;添加外源碳对技术新成土的pH、容重等物理性状有改良趋势。在试验条件下,石粉、赤泥、生物炭较适宜的质量分数分别为24.51%、24.51%、1.96%。In order to achieve the resource utilization of red mud,straw and biochar are used as carbon sources,and pure stone powder(stone powder)is added to bauxite waste residue red mud.The effects of red mud as a basic material and combining it with different carbon sources and stone powder on the physicochemical properties of technosols from red mud are investigated.The results show that the combination of stone powder with different external carbon sources can help improve soil fertility,and nutritional effect on improving technosols of biochar is more obvious than that of straw.Adding exogenous carbon has a trend of improving the physical properties such as pH and bulk density of technosols.Under experimental conditions,the suitable mass fractions of stone powder,red mud and biochar are 24.51%,24.51%and 1.96%,respectively.

关 键 词：赤泥 技术新成土 理化性状 固体废弃物 资源化利用 

分 类 号：X705[环境科学与工程—环境工程] S153[农业科学—土壤学]