Ivhu organic matter uye humus hazvina kufanana. “Humus” inoreva boka remahumus akazvimirira uye akapatsanurwa, nepo “ivhu organic matter” chiri chinhu chinoshatisa pasi pevhu pamwero wakasiyana.
Iyo humus yatinotaura nezvayo pamwe chete inosanganisira anotevera mapoka:
Fulvic acid: yero kana yero-brown humus, inonyungudika mumvura pasi pemamiriro ese epH, uye ine huremu hudiki hwemamorekuru.
Humic acid: humus yakasviba yakasviba inonyungudika mumvura chete paivhu rakakwirira pH uye ine huremu hwemamolecular hunodarika hwefulvic acid.
Black humic acid: Black humus, isinganyunguriki mumvura chero ipi zvayo inokosha yepH, ine huremu hwema molecular, uye haina kumbobvira yawanikwa mune alkali-yakabudiswa mvura humic acid zvigadzirwa.
Kuiswa kwe organic matter kunogona kunyatso mutsa tupukanana ivhu. Ivhu rejecha rine hurombo hwekutsinhanisa cations uye zvinonetsa kuchengetedza cation yemukati yezvinovaka muviri. Kana kusanaya kwemvura kwakapararira uye kushayikwa kwe humus, ivhu rejecha harigoni kuchengeta mvura. Sezvo mvura uye zvinovaka muviri zvinongowanikwa kwenguva pfupi mushure mekushandiswa, jecha riri mumamiriro e "mabiko kana nzara".
Nguva yekutumira: Oct-23-2020