土壤有机质是土壤的重要组成部份,它的含量和质量直接影响到土壤的性状和肥力.分析观察看出不同的土壤类型,其有机质的含量、组成和性质,差异明显.腐殖质是土壤有机质的主体.按溶解度的不同腐殖质可分为胡敏酸和富里酸.研究探讨它的组成和特性,可以进一步了解本地区土壤的形成条件和土壤性质.为土壤分类、合理开发利用土地资源、培肥地力、安排作物布局、 Soil organic matter is an important part of soil, and its content and quality have a direct impact on soil properties and fertility. Analysis shows that different soil types, the content, composition and nature of organic matter, the difference is obvious. Humus is the soil organic matter The main body.According to the different solubility humus can be divided into humic acid and fulvic acid.Study on its composition and characteristics of the region can further understand the formation of soil conditions and soil properties for the soil classification and rational development and utilization of land resources, Fertility, arrangement of crop layout,