Abstract With the development of China's coal industry, coal gangue has become one of the most extensive solid wastes. The collection of soil from other places for land reclamation has become a commonly used technology for ecological restoration of coal-mining areas in China. The purpose of this study was to use coal gangue as a new type of planting substrate component, with the goal of replacing soil to solve the increasing shortage of land resources. The formulation of the substrate was optimized using an orthogonal experiment with four factors: coal gangue (g)-to-soil (g) ratio (1000:0, 750:250, 500:500), maize straw content (0, 25, and 50 g kg−1), fly ash content (0, 75, and 150 g kg−1), and water retention agent content (0, 1, and 2 g kg−1).The results showed that coal gangue significantly improved the chemical properties (organic matter, total N, total P, available N, available P and available K) of the substrate (P

中文翻译：

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利用废弃物优化煤矸石种植基质配方：煤矿生态修复的可持续性

摘要 随着我国煤炭工业的发展，煤矸石已成为分布最广的固体废物之一。从异地采集土壤进行土地复垦已成为我国煤矿区生态修复的常用技术。本研究的目的是利用煤矸石作为一种新型的种植基质成分，以替代土壤解决土地资源日益短缺的问题。使用具有四个因素的正交试验优化基质配方：煤矸石 (g) 与土壤 (g) 比（1000:0、750:250、500:500）、玉米秸秆含量（0、25、和 50 g kg-1)、粉煤灰含量（0、75 和 150 g kg-1）和保水剂含量（0、1 和 2 g kg-1）。 结果表明煤矸石显着改善化学性质（有机物，