黑土退化已严重威胁着松嫩平原农业的发展。黑土开垦后，土壤有机质含量开始降低，养分失去平衡，物理性状恶化，发生侵蚀。作者通过十几年的研究，分析了黑土退化程度、速度和起因，研究了控制黑土退化、土壤肥力恢复和作物—土壤生态系统持续性的途径。这些途径包括生物和生态工程方法。 Black soil degradation has seriously threatened the development of agriculture in Songnen Plain. After reclamation of black soil, the content of soil organic matter began to decrease, the nutrients lost balance, the physical properties deteriorated and erosion occurred. Through more than ten years of research, the author analyzed the degree, speed and cause of black soil degeneration, and studied the ways of controlling black soil degeneration, soil fertility restoration and crop-soil ecosystem sustainability. These include biological and ecological engineering methods.