Refers to soil as a natural substance, especially in agricultural, geological, or environmental contexts. More formal than 土 (つち).
The soil in this region is suitable for rice cultivation.
Soil contamination has become a serious problem.
breeding ground; fertile ground
Metaphorical use: an environment or conditions that foster the development of something, often negative (crime, corruption) but also positive (talent, culture).
Poverty is a breeding ground for crime.
The liberal school culture became fertile ground for nurturing creativity.
A variety of vegetables grow well in fertile soil.
Poverty can become a breeding ground for crime.
This city has an environment that nurtures artists.
土 is the plain, everyday word for dirt or ground, while 土壌 is the more formal, technical term used in agricultural or scientific contexts.
土地 refers to land as a plot of property or area, whereas 土壌 refers to the soil substance itself, not the land as a whole.
土壌 is the general term for 'soil' of any kind, while ローム names one specific soil texture made of sand, silt, and clay.
土壌 means soil in the sense of fertile ground for growing plants, while 土砂 refers to loose earth and sand, often swept up in disasters or construction.
Compound of 土 (ど, 'earth, soil') and 壌 (じょう, 'soft soil, loam'). The second character is not used independently in modern Japanese.
acid soil