不同生物炭对土壤镉形态及小白菜吸收镉的影响  

Effects of Different Biochar on Soil Cadmium Morphology and Cadmium Uptake by Chinese Cabbage

作　　者：张仕骏 包明哲 张子晨 王晓斌 王晨骁 来雪慧 Zhang Shijun;Bao Mingzhe;Zhang Zichen;Wang Xiaobin;Wang Chenxiao;Lai Xuehui(Department of Environment and Safety Engineering,Taiyuan Institute of Technology,Taiyuan Shanxi 030008,China)

机构地区：[1]太原工业学院环境与安全工程系,山西太原030008

出　　处：《山西化工》2024年第5期208-210,219,共4页Shanxi Chemical Industry

基　　金：国家级大学生创新创业项目(202314101030)。

摘　　要：以农业废弃物为原料,制备玉米秸秆炭(MB)和花生壳炭(PB),通过盆栽实验分析对土壤镉(Cd)形态及小白菜的吸收情况。结果表明,与未添加生物炭处理(CK)相比,两种生物炭均可有效降低土壤Cd含量,同时土壤Cd形态由酸溶态和可氧化态向残渣态转化。土壤有效Cd含量与土壤p H值、有机碳含量均呈现显著的负相关关系(p<0.05),相关系数大于0.90。与CK相比,MB处理小白菜地上Cd含量降幅为17.01%;MB处理的转运系数降低9.19%,而PB处理的转运系数几乎没有变化。因此,MB生物炭能降低土壤Cd的有效性,并降低小白菜对Cd的吸收和转运。Maize straw(MB) and peanut shell carbon(PB) were prepared from agricultural waste,and the soil cadmium(Cd) morphology and the adsorption of Chinese cabbage were analyzed by pot experiment.The results showed that both kinds of biochar could effectively reduce soil Cd content compared with CK treatment,and the soil Cd morphology changed from acid-soluble and oxidizable state to residual state.Soil available Cd content was negatively correlated with soil p H and organic carbon content(p<0.05),and the correlation coefficient was greater than 0.90.Compared with CK,the Cd content in ground of Chinese cabbage treated with MB decreased by 17.01%.The transfer coefficient of MB treatment was reduced by 9.19%,while the transfer coefficient of PB treatment was almost unchanged.Therefore,MB biochar can reduce the availability of Cd in soil,the adsorption and transport ability of Cd by Chinese cabbage.

关 键 词：生物炭 土壤镉 重金属形态 镉吸收 

分 类 号：X53[环境科学与工程—环境工程]