Humus chinhu chakasviba-ruvara, amorphous, polydispersed organic substance ine high molecular huremu iyo yakaoma kuderedzwa. Iyo inoumbwa kubva kumuviri, makemikari, uye hutachiona kuora uye shanduko yemhuka nechirimwa zvinosara. Naizvozvo, iripo muhuwandu hukuru muvhu, peat, lignite, mvura uye sediment. Zvinonyanya kushanda zvinoshandiswa muhumus ihumic acid uye fulvic acid, uye ine humin hushoma. Sezvo humic acid inonyungudika mualkali asi isiri muasidhi, fulvic asidhi inonyungudika muasidhi nealkali, uye humus isinganyunguriki muasidhi nealkali, uye HM hainyunguriki muasidhi nealkali. , saka vanogona kuparadzaniswa uye kucheneswa kusvika pamwero wakati kuburikidza nekunyungudika. Humic acid ndeye macromolecular organic acid inoumbwa neanonhuhwirira uye akasiyana anoshanda anoshanda mapoka. Iyo ine yakakwirira reactivity uye inoshandiswa zvakanyanya mune zvekurima, mishonga uye Environmental kuchengetedzwa uye mamwe minda.