团粒结构是土壤结构的一种形式,它是由钙质(石灰)与腐殖质胶结所形成的土团,土团近于圆形,一般有小米到黄米粒般大小。稳固的团粒在水中不会散开,叫做水稳性团粒结构。有水稳性团粒结构的土壤,耕层中有大小两种孔隙,团粒内部有许多小孔隙——毛细管孔隙,可以贮藏水分和溶解在水中的养分,好象一个小水库和一个养分贮藏库;团粒之间有大孔隙,可以通过空气。这种结构的土壤,有疏松通气、蓄水保墒、徐徐 Agglomerate structure is a form of soil structure. It is a soil formed by cementation of calcareous (lime) and humus. The soil is nearly circular in shape and generally has a millet-to-yellow grain size. Solid particles in the water will not spread, called water-stable aggregate structure. Soil with water-stable pellet structure has two sizes of pores in the tillage layer. There are many small pores in the pellet - capillary pores, which can store water and nutrients dissolved in the water, like a small reservoir and a nutrient storage; There are large pores between the particles, you can through the air. This structure of the soil, loose aeration, water conservation, slowly