Effects of diversified planting on soil micro-ecology in acidic soils

Soil acidification seriously inhibits the diversity and function of soil microbial communities through multiple stresses, including low pH, ion toxicity, and nutrient depletion. It acts as a critical bottleneck restricting sustainable agricultural development. As an eco-friendly management measure, diversified planting demonstrates immense potential in remediating the micro-ecology of acidic soils, serving as an effective biological strategy to enhance soil health and productivity. This paper systematically reviews the underlying mechanisms by which diversified planting improves the micro-ecology of acidic soils, its synergistic effects with other amelioration measures, and future research avenues. Diversified planting improves soil structure and buffering capacity by chelating aluminum ions and regulating rhizosphere pH through root exudates as well as increasing organic matter inputs. It provides specific niches for key functional microorganisms-such as nitrogen-fixing bacteria, phosphate-solubilizing bacteria, and mycorrhizal fungi. By enriching these key taxa, diversified planting facilitates the construction of microbial interaction networks that are more complex and stable, thereby enhancing the resilience of the entire micro-ecosystem. In-depth exploration of the remedial effects of diversified planting on acidic soil micro-ecology holds significant scientific value and provides practical guidance for establishing green and efficient sustainable agricultural models in acidic soil regions.