A 6 weeks pot culture experiment was carried out to investigate the stabilization effects of a modified biochar (BCM) on metals in contaminated soil and the uptake of these metals by wheat seedlings. The results showed that the application of BCM significantly increased the soil fertility, the biomass of wheat seedling roots increased by more than 50%, and soil dehydrogenase (DHA) and catalase (CAT) activities increased by 369.23% and 12.61%, respectively. In addition, with the application of BCM, the diethylenetriaminepentaacetic acid extractable (DTPA-extractable) Cd, Pb, Cu and Zn in soil were reduced from 2.34 to 0.38 mg/kg, from 49.27 to 25.65 mg/kg, from 3.55 mg/kg to below the detection limit and from 4.05 to 3.55 mg/kg, respectively. Correspondingly, the uptake of these metals in wheat roots and shoots decreased by 62.43% and 79.83% for Cd, 73.21% and 66.32% for Pb, 57.98% and 68.92% for Cu, and 40.42% and 43.66% for Zn. Furthermore, BCM application decreased the abundance and alpha diversity of soil bacteria and changed the soil bacterial community structure dramatically. Overall, BCM has great potential for the remediation of metal-contaminated soils, but its long-term impact on soil metals and biota need further research.

进行了为期 6 周的盆栽实验，以研究改性生物炭 (BCM) 对受污染土壤中金属的稳定作用以及小麦幼苗对这些金属的吸收。结果表明，施用BCM显着提高了土壤肥力，小麦幼苗根系生物量提高了50%以上，土壤脱氢酶（DHA）和过氧化氢酶（CAT）活性分别提高了369.23%和12.61%。此外，随着BCM的应用，土壤中二亚乙基三胺五乙酸可提取物（DTPA可提取物）Cd、Pb、Cu和Zn从2.34减少到0.38mg/kg，从49.27减少到25.65mg/kg，从3.55mg/kg分别低于检测限和 4.05 至 3.55 mg/kg。相应地，镉对小麦根和芽中这些金属的吸收减少了62.43％和79.83％，铅为73.21％和66.32％，铜为57.98％和68.92％，锌为40.42％和43.66％。此外，BCM 的应用降低了土壤细菌的丰度和 alpha 多样性，并显着改变了土壤细菌群落结构。总体而言，BCM 在修复金属污染土壤方面具有巨大潜力，但其对土壤金属和生物群的长期影响需要进一步研究。