提高土壤生产力的有效措施,从长远看,除合理施用化肥外,就是向土壤输入有机物质,它能为作物提供多种营养元素,维持地力长盛不衰。国内外研究结果表明:施用有机物质具有提高土壤有机质含量、改善土壤理化性状和增强土壤的抗逆性能等方面的重要作用。但是,有机物质与土壤的肥力关系,是错综复杂的,能 Effective measures to improve soil productivity, in the long run, in addition to the rational use of fertilizers, is to input organic matter into the soil, it can provide a variety of nutrients for crops, to maintain fertility. The research results at home and abroad show that the application of organic matter plays an important role in improving soil organic matter content, improving the physical and chemical properties of soil and enhancing the resistance of soil. However, the relationship between organic matter and the fertility of soil is complex and can be