Humic acids: nws yog qhov sib xyaw ntawm ntau cov kua roj siab muaj zog acids tsim los ntawm cov tsiaj thiab cov nroj tsuag thiab cov txheej txheem kev hloov tshuaj lom neeg. Nws yog nplua nuj nyob rau ntau pawg ua haujlwm yam ua ke xws li carboxyl, hydroxyl, metoxy, carbonyl, thiab quinone.

Cov amino acids yog lub npe dav dav rau chav kawm cov organic sib txuas muaj amino thiab cov pab pawg carboxyl. Nws yog lub tsev pib tsim hluav taws xob ntawm microscological macromolecular protein thiab cov tshuaj uas yooj yim uas yuav tsum muaj cov protein yuav tsum muaj rau tsiaj thiab cog khoom noj.

Kev nthuav tawm cov ntaub ntawv tshawb xyuas cov ntaub ntawv feem ntau suav nrog cov noob germination, rooting, sprouting, nplooj, flowering thiab lwm yam theem. Cov kev hloov pauv hauv txhua theem tuaj yeem sau cia kom meej los ntawm kev tshuaj xyuas txuas ntxiv. ‌

Organic dej-soluble chiv nplua nuj nyob rau hauv nitrogen, phosphorus uas xav tau rau kev cog kev loj hlob thiab tuaj yeem txhawb cov nroj tsuag kev loj hlob thiab kev loj hlob.