Properties of granulometric fractions formed from diffrent parent material

acide fulvique acide humique aluminio aluminium azote calcio calcium carbon carbone carbono cation cationes cations contenido mineral densidad del suelo depth elemento primario del suelo estructura del suelo fer fosforo fracciones del suelo fraction du sol fulvic acids hierro humic acids hydrogen iron magnesio magnesium methode methods mineral content mineral soils nitrogen organic compounds perfil del suelo phosphore phosphorus poland pologne polonia profil du sol profondeur profundidad sandy soils sistema poroso del suelo soil chemicophysical properties soil density soil parent materials soil pore system soil profiles soil separates soil sorption soil structural units soil structure sol sableux sorption du sol structure du sol suelo arenoso suelo mineral titrimetria titrimetrie titrimetry unidades estructurales de suelos