1796, from Latin humus "earth, soil," probably from humi "on the ground," from PIE *dhghem- "earth" (source also of Latin humilis "low;" see chthonic). Related: Humous (adj.).
例文
1. Earthworms consume large amounts of soil,and produce a rich humus ,perfect in texture.
ミミズは大量の土壌を食べ、肥沃で物理構造の理想的な腐植質を排出する。
2.The lack of humus and the excessive leaching make this soil almost useless for agricultural purpose.
腐植質の欠乏と過度な浸出により、この土壌は農業に対してほとんど役に立たない。
3. Humus is dead,decaying organic matter.NOT inorganic fertilizer.
腐植質は死んでおり、腐敗中の有機物質である.無機肥料ではありません。
4.The rendzina is rich in lime and has an upper humus horizon.
石灰と高い量の腐植質を豊富に含む.
5.When the humus has been formed,plants can grow well in it.