スポディック層位（spodic horizons）
意味
The spodic horizon (from Gr. spodos, wood ash) is a dark coloured subsurface horizon which contains illuvial amorphous substances composed of organic matter and aluminium, with or without iron.
オトモ農学オトモ農学The spodic horizon (from Gr. spodos, wood ash) is a dark coloured subsurface horizon which contains illuvial amorphous substances composed of organic matter and aluminium, with or without iron.