Department of Plant Biology and Soil Science, Faculty of Biology, University of Vigo, As Lagoas-Marcosende, 36310, Vigo, Pontevedra, Spain.
Department of Plant Nutrition, University of São Paulo - Center of Nuclear Energy in Agriculture (USP-CENA), Av. Centenário 303, Piracicaba, SP, 13400-970, Brazil.
Environ Monit Assess. 2018 Sep 27;190(10):610. doi: 10.1007/s10661-018-6997-4.
A large number of studies on the reclamation of mine soils focused on the problem caused by metals and did not explore in depth the issue of nutrients and vegetation after the application of organic materials. The aim of this study was to compare the effect of two treatments made of wastes and vegetated with Brassica juncea L. on the fertility of a settling pond mine soil. The first treatment was compost, biochar, and B. juncea (SCBP) and the second treatment was technosol, biochar, and B. juncea (STBP). This study evaluated the effect of the treatments on the soil nutrient concentrations and fertility conditions in the soil amendment mixtures, after 11 months of greenhouse experiment. Total carbon and nitrogen concentrations were higher in treatment SCBP than in treatment STBP after 7 months but, after 11 months, carbon concentration was higher in STBP. The used technosol could have forms of carbon more stable than compost, which could be released slower than in the compost-amended soils. Both compost and technosol mixed with biochar also increased the concentration of calcium, potassium, magnesium, and sodium in exchangeable form in the mine soil.
大量研究集中于探讨土壤中金属元素的修复问题，而未深入探讨有机物料施用后土壤养分和植被的问题。本研究旨在比较两种由芥菜（Brassica juncea L.）种植的废弃物制成的处理方法对沉淀池矿山土壤肥力的影响。第一种处理方法是堆肥、生物炭和芥菜（SCBP），第二种处理方法是技术土壤、生物炭和芥菜（STBP）。这项研究在温室实验进行 11 个月后，评估了处理方法对土壤改良混合物中土壤养分浓度和肥力状况的影响。经过 7 个月，处理 SCBP 中的总碳和氮浓度高于处理 STBP，但经过 11 个月，STBP 中的碳浓度更高。所用的技术土壤可能比堆肥具有更稳定的碳形式，其在堆肥改良土壤中的释放速度可能更慢。堆肥和技术土壤与生物炭混合后，也增加了可交换形式的钙、钾、镁和钠在矿山土壤中的浓度。
