Hassan Sayyeda Hira, Chafik Yassine, Sena-Velez Marta, Lebrun Manhattan, Scippa Gabriella Stefania, Bourgerie Sylvain, Trupiano Dalila, Morabito Domenico
Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy.
Laboratoire de Biologie des Ligneux et des Grandes Cultures, Université d'Orléans, INRAE, USC 1328, LBLGC EA 1207, CEDEX 2, 45067 Orléans, France.
Plants (Basel). 2023 May 23;12(11):2077. doi: 10.3390/plants12112077.
In this study, we investigated the effect of different rates of compost (20%, 40%, 60% /) in combination with biochar (0%, 2%, 6% /) on soil physiochemical properties and the mobility of arsenic (As) and lead (Pb), in addition to the ability of (ecotype Columbia-0) to grow and accumulate metal(loid)s. All modalities improved pH and electrical conductivity, stabilized Pb and mobilized As, but only the mixture of 20% compost and 6% biochar improved plant growth. Plants in all modalities showed a significant reduction in root and shoot Pb concentrations compared to the non-amended technosol. In contrast, As shoot concentration was significantly lower for plants in all modalities (except with 20% compost only) compared to non-amended technosol. For root As, plants in all modalities showed a significant reduction except for the mixture of 20% compost and 6% biochar. Overall, our results indicate that the mixture of 20% compost with 6% biochar emerged as the optimum combination for improving plant growth and As uptake, making it the possible optimum combination for enhancing the efficiency of land reclamation strategies. These findings provide a foundation for further research on the long-term effects and potential applications of the compost-biochar combination in improving soil quality.
在本研究中，我们调查了不同比例堆肥（20%、40%、60%/）与生物炭（0%、2%、6%/）组合对土壤理化性质、砷（As）和铅（Pb）迁移性的影响，以及生态型哥伦比亚-0生长和积累金属（类金属）的能力。所有处理方式均改善了土壤pH值和电导率，稳定了铅并使砷活化，但只有20%堆肥和6%生物炭的混合物改善了植物生长。与未改良的技术土壤相比，所有处理方式下植物的根和地上部铅浓度均显著降低。相比之下，与未改良的技术土壤相比，所有处理方式下植物（除仅添加20%堆肥的处理外）地上部砷浓度均显著降低。对于根中的砷，除20%堆肥和6%生物炭的混合物外，所有处理方式下植物的根砷含量均显著降低。总体而言，我们的结果表明，20%堆肥与6%生物炭的混合物是改善植物生长和砷吸收的最佳组合，使其可能成为提高土地复垦策略效率的最佳组合。这些发现为进一步研究堆肥-生物炭组合在改善土壤质量方面的长期影响和潜在应用奠定了基础。
