0 the material on the surface of the ground in which plants grow -- 泥土,土壤
1 to make something dirty, especially with solid waste -- (尤指因大便)弄脏
acid soil
This vertical section of the soil shows four basic soil layers.
Corn is grown a lot in this area - the soil seems to suit it very well.
These new plants haven't taken - they don't like this dry soil.
The soil in this area is very chalky.
A survey of soils for aggregate stability and glomalin, a glycoprotein produced by hyphae of arbuscular mycorrhizal fungi.
Compost-treated soils exhibited higher organic carbon content than inorganically fertilized soils, throughout the experimental period.
Although the soils are inherently fertile, deep and with good drainage, they have been depleted of nutrients over the years.