全球煤炭行业产生了大量的尾矿废物,这些尾矿的利用需要为联合国可持续发展目标做出创新努力。这样的新举措之一是安全地再利用煤尾矿(CT),生态友好,并在农业生态系统中作为土壤改良剂以提高土地生产力。本研究旨在评估煤尾矿废物在土壤改良中的潜在利用,以提高植物性能。澳大利亚两个矿区(CT1和CT2)的煤尾矿的物理化学特征表明,尾矿样品呈碱性,具有壤质和壤质的砂质,分别。尾矿含有约3%的常量营养素,高碳(C),和低重金属和准金属(As,Cd,Se,Cu,Zn,和Pb)。低速率CT处理提高了番茄种子的发芽率。温室番茄植物表现出叶片K的增加,Ca,CT1和CT2处理中的Mg含量。更重要的是,CT处理诱导的重金属在植物中的积累在两种CT处理中大多不显著。因此,我们强调了煤尾矿作为土壤改良剂的潜在应用,因为改善碳和养分(N,P,K,Mg,和Ca)在番茄叶中。煤尾矿的进一步修正应集中在调节pH值和添加其他有益材料,以改善温室和田间作物的土壤特性。
The global coal industry yields a vast amount of tailings waste, and the utilisation of these tailings necessitates innovative efforts contributing to the United Nations Sustainable Development Goals. One of such novel initiatives is to reuse coal tailings (CT) safely, ecofriendly, and cost-effectively in agroecosystems as a soil conditioner to enhance the productivity of lands. This study aimed to evaluate the potential utilisation of coal tailings waste in the soil amelioration to improve plant performance. The physico-chemical characteristics of coal tailings from two Australian mining sites (CT1 and CT2) showed that the tailings samples are alkaline with loamy and loamy sand textures, respectively. The tailings have ~ 3% of macronutrients, high carbon (C), and low heavy metals and metalloids (As, Cd, Se, Cu, Zn, and Pb). The germination rate of tomato seeds was improved in the low-rate CT treatment. Greenhouse tomato plants exhibited an increase in leaf\'s K, Ca, and Mg contents in CT1 and CT2 treatments. More importantly, the CT treatment-induced accumulation of heavy metals in plants was mostly insignificant in both CT treatments. Therefore, we highlight the potential application of coal tailings as a soil conditioner because of the beneficial effect of improved carbon and nutrients (N, P, K, Mg, and Ca) in tomato leaves. Further amendment of the coal tailings should focus on the adjustment of pH and the addition of other beneficial materials for the improvement of soil properties for crops in both the greenhouse and the field.