1 27 quality soils, increase soil organic matter and soil water-holding rate, and form a virtuous material cycle. Figure 6 - Growth charts of different crops in the improved low-productivity land 5. CONCLUSIONS Through key processes including crushing and fermentation, forestry, agricultural, and livestock residues can be quickly and completely converted into microbial fertilizer within 24 hours. The planting effect is optimal when the mixing ratio with coal gangue is 10%, which can significantly improve the rapidly available nutrients in the soil. The synergy between the two can maximize the utilization of rich organic matter in forestry, agricultural, and livestock residues, and achieve rapid decomposition of coal gangue. The synergy between fine-grained gangue and tailing coal slime is simple, and the water retention and aeration are optimal when the ratio is 1:1. The ratio of coal gangue is over 60%, and the processing capacity is large. The produced artificial soil has shown remarkable results when used directly for growing vegetables and fruits. The research results have important significance for promoting and providing references for the large-scale disposal and resource utilization of coal gangue, agricultural development and construction, and ecological environment management in mining areas. REFERENCES: [1]Zhu Lei, Gu Wenzhe, He Zhiwei, et al. Current Situation of Comprehensive Utilization of Coal Gangue and Exploration of High-value Utilization Paths: Taking China National Coal Group Corp. as an Example[J]. Coal Science and Technology, 2025, 53 (6): 104–124. [2]Bi Yinli, Wu Fuyong, Wu Yukun. Improvement and Fertilization of Coal Mining Waste Substrate by Inoculation of Microorganisms[J]. Journal of China Coal Society, 2006 (3): 365– 368. [3]Hu Longbing, Li Xiaohua. Quantitative Analysis of Highly Cited Literature on Ecological Restoration of Mines in China Based on CiteSpace[J]. Mineral Exploration, 2023, 14 (07): 1215–1222. [4]He Junyu, Ren Yanfang, Li Yaling, et al. Feasibility Study of Coal Gangue as Soilless Culture Substrate[J]. Environmental Science & Technology, 2010 (11). [5]Tong Guanhe, Zhang Kegui, Liu Tianjiao, et al. Influence of New Soilless Culture Substrate Formulation on Growth and Yield of 4 Leafy Vegetables – Taking Culture Substrate
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