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Humic Acid yog dab tsi?

Humic acid yog ib feem ntawm cov khoom humic uas muaj cov yas ntev molecular uas yog siab hauv molecular luj, tsaus xim av xim thiab nyob rau hauv cov dej kua tshuaj. Nws yog muab los ntawm cov organic feem ntawm av, humus, peat thiab thee. Humic acid yog lub tshuab zoo heev hauv av, tshwj xeeb tshaj yog rau cov xau uas muaj cov organic tsawg.