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研究了长期轮作施肥对土壤有机质及其组分的影响，结果表明：在不施肥耕种条件下，通过粮豆轮作，基本可以维持土壤有机质的平衡，但其活性有机质含量、腐殖酸总量及胡敏酸含量却在不断下降，单施化肥，开始时土壤有机质含量降低，以后随耕种年限的延长，基本可以维持在较低水平，活性有机质、腐殖酸总量、胡敏酸和胡敏素含量降低，富里酸含量提高；施用有机肥处理，特别是施用高量有机肥，有利于提高胡敏酸和胡敏素比例，而减少富里酸的生成，培肥作用较为明显。
The effects of long-term rotation fertilization on soil organic matter and its components were studied. The results showed that under the condition of no fertilization, the balance of soil organic matter could be basically maintained by the rotation of grain beans, but the contents of active organic matter, total humic acid, Humic acid content is declining, only the application of chemical fertilizers, soil organic matter content decreased at the beginning, with the extension of farming years later, basically can be maintained at a low level, active organic matter, total humic acid, humic acid and humin content Decreased, the content of fulvic acid increased; application of organic fertilizer treatment, especially the application of high amount of organic manure, is conducive to improve the ratio of humic acid and humin, and reduce the production of fulvic acid, fertilizing effect is more obvious.