topsoil
topsoil — noun
1. the dark, nutrient-rich layer of earth found at ground level, where most plants
the dark, nutrient-rich layer of earth found at ground level, where most plants spread their roots and get the minerals they need to grow
The farmer spread fresh topsoil over the garden beds before planting carrots and lettuce.
uncountable noun — spread + topsoil over [area]
After the flood, Lakshmi bought new topsoil to replace what the water washed away.
buy + new topsoil; quantity reference
Good topsoil feels dark and crumbly in your hand and smells like wet earth.
The builders scraped off the topsoil before digging the foundation for the new house.
- surface soil
the same meaning but more technical; used in scientific or formal writing
- loam
a specific type of rich, crumbly topsoil with balanced sand, silt, and clay; narrower in meaning
- earth
general term for soil or ground; broader and less specific
- subsoil
the layer of soil beneath topsoil, usually lighter in colour and lower in nutrients
文法句型
a layer/amount of + topsoil
spread/remove + topsoil
用法筆記
Topsoil is typically an uncountable noun (some topsoil, a layer of topsoil). The plural form topsoils is rare and used only when referring to different grades or types from separate locations.