有机胶结形成土壤团聚体的机理及理论模型

Mechanisms of organic cementing soil aggregate formation and its theoretical models.

土壤团聚体是土壤结构的基本单位 ,其组成和稳定性直接影响土壤肥力和农作物的生长 .对于有机质含量高的黑土 ,有机胶结物质是形成土壤团聚体的主要因素 .在综合有机胶结剂和土壤团聚体的研究的基础上 ,阐述了有机胶结物质的特性 ,土壤生物和植物根系在土壤团聚体形成中的作用 ,土壤团聚体形成的机理及理论模型 .

Soil aggregate is the basic unit of soil structure, and its formation and stabilization has direct effect on soil fertility and crop growth.For black soil with high content of organic matter,organic cementing substance is an important factor in forming soil aggregates.Based on the recent researches on organic cementing agents,this paper was focused on the nature of organic cementing substances,the effect of soil organisms and plant roots in forming soil aggregates,and the theoretical models and stable mechanisms of soil aggregate formation.