关键词: 肥力调节与培育, 棕壤型菜园土, 土壤微团聚体

Abstract: This paper discusses the role of herbages in land cover, water conservation and purification, soil fertility improvement and urban environmental protection and points out the ways of fully using the ecolomic efficiency of them.

Key words: Soil fertility regulation and improvement, Brown earth type vegetable garden soil, Soil microaggregates