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本文以不同肥力黑土和棕壤为试材,通过对各级微团聚体中胶结物质数量、分布及其特性的研究表明:各级微团聚体中胶结物质的分布是随着微团聚体粒径增大而减少,各级微团聚体对养分的供储功能在很大程度上取决于其中胶结物质的种类、数量和存在形态。小于10μm的微团聚体之所以对养分有较大的吸储功能,主要是由于含有大量有机和无机胶结物,大粒级微团聚体由于在其形成过程中既有松结态有机胶结物与矿质土粒的复合,又有由小粒级复合体的逐级团聚,因此表现出疏松多孔,对养分的释放能力较强。
In this paper, fertile black soil and brown soil as the test material, through the microaggregates at all levels of the amount of cementitious material, distribution and characteristics of the study showed that: microaggregates at all levels of cementitious material distribution with the microaggregate particle size Increase and decrease, all levels of micro-aggregates for nutrient storage function depends largely on the type of cement which species, quantity and presence of morphology. The reason why microaggregates smaller than 10μm have greater absorption and storage functions for nutrients mainly includes a large amount of organic and inorganic cementitious materials. Because of the loose cementitious organic cement and mineral soil particles Of the complex, but also by the small-scale complex of the level of agglomeration, it showed loose porous, strong release of nutrients.