Ploughing mainly has the function of turning over soil, loosening soil and breaking soil.
举一反三
- Soil fertility is soil productivity, which refers to the ability of soil to produce plant products.
- Soil radiation is the only source of soil heat.
- The role of trees is to______. A: loose soil B: keep soil in position C: harden soil D: Both A and B
- Soil age refers to the length of time for soil development. Soil age is usually divided into absolute age and relative age.
- At the moment of applying load on saturated cohesive soil, who bears all the stress increase in the soil? A: Soil skeleton B: Pore water C: Both soil skeleton and pore water D: None of the above is true.