1.土壤细菌和真菌土壤里面有固体颗粒,颗粒与颗粒之间有孔隙;有水;有空气;有各种微生物所必需的养料.因此,土壤便成了微生物的天然培养基,里面生长着数不清的,各种各类的细菌、放线菌、真菌、藻类和原生动物. 这些土壤微生物之中,以细菌和真菌的数目最多,在土壤中的作用也最大.虽然每一类土壤,极可能同时含有细菌和真菌,但因环境条件的不同,总有一类微生物占优势.这,对于我们以后就要讲到的腐植质的形成 1. Soil Bacteria and fungi There are solid particles in the soil, there are pores between the particles and the particles, there is water, there is air, there are all kinds of nutrients necessary for the microorganisms, so the soil becomes the natural medium for the microorganisms to grow Countless, all kinds of bacteria, actinomycetes, fungi, algae and protozoa among these soil microorganisms, the largest number of bacteria and fungi, the role of the soil is also the largest .Although each type of soil , Most likely both bacteria and fungi, but due to the different environmental conditions, there is always a class of microorganisms dominant.This, we will talk about the formation of humus