Lub hav zoov ntawm poov tshuaj nyob rau hauv cov qoob loo txawv los ntawm nitrogen thiab phosphorus. Nws feem ntau muaj nyob rau hauv daim ntawv ntawm ionic lossis soluble ntsev los yog adsorbed nyob rau saum npoo ntawm protoplasm, ntau dua li nyob rau hauv daim ntawv ntawm cov organic sib txuas.
Lub luag haujlwm tseem ceeb ntawm cov poov tshuaj hauv cov qoob loo yog li hauv qab no: Potassium yog qhov ua kom muaj ntau ntawm cov enzymes. Cov Enzymes yog cov catalysts hauv cov txheej txheem metabolic ntawm cov qoob loo. Yog tias tsis muaj cov enzymes, ntau cov txheej txheem physiological tsis tuaj yeem nqa tawm. Cov poov tshuaj tuaj yeem txhawb nqa photosynthesis thiab txhawb kev sib txuas ntawm cov carbohydrates. Thiab kev thauj mus los; poov tshuaj tuaj yeem txhawb qhov synthesis ntawm protein; poov tshuaj tuaj yeem txhim kho qhov nyuaj ntawm cov noob qoob loo, thiab txhim kho lub peev xwm ntawm cov qoob loo kom tiv taus chaw thiab kab mob thiab kab; poov tshuaj tuaj yeem txhim kho qhov muaj peev xwm ntawm cov qoob loo kom tiv taus ntuj qhuav thiab txias.
Cov poov tshuaj sulfate thiab potassium nitrate yog ob qho tib si binary compound chiv. Lub ntsiab sib txawv ntawm ob yog: Potassium sulfate, uas tsuas yog ib hom potassium potassium, tsis muaj phosphorus thiab nitrogen chiv. Txhawm rau siv nrog rau lwm yam chiv. Cov poov tshuaj nitrate yog ib qho kev sib xyaw ua ke uas muaj cov poov tshuaj thiab nitrogen. Nws muaj txiaj ntsig zoo dua rau kev thov nitrate nitrogen rau chloride-rhiab cov qoob loo ntau dua li ammonium nitrogen, xws li citrus, txiv quav ntswv nyoos, zaub, qab zib beets thiab lwm cov qoob loo uas rhiab rau chloride ions. Nitrate nitrate hauv potassium nitrate tuaj yeem tiv thaiv cov qoob loo los ntawm nqus cov chloronitrate nitrogen hauv av. Nws tuaj yeem muab tau sai sai nyob rau hauv ib qho xwm txheej. Nws yog tsim rau lub caij nplooj ntoo hlav, lub caij ntuj sov, lub caij nplooj zeeg thiab lub caij ntuj no; nws yuav tsis ua rau kom cov ntsev ntau zuj zus hauv cov av. Ob qhov av thiab cog qoob loo tuaj yeem ua tiav cov txiaj ntsig zoo, tshwj xeeb tshaj yog tsim nyog rau cov qoob loo tsis muaj chlorine, xws li haus luam yeeb, txiv lws suav, txiv kab ntxwv, txiv hmab, thiab lwm yam; poov tshuaj nitrate ntau kim dua li potassium phosphate.
Cov poov tshuaj sulfate yog cov xim siv lead ua tsis muaj xim nrog hygroscopicity, tsis yooj yim rau agglomerate, lub cev zoo, yooj yim thov, thiab yog cov dej-soluble potassium potassium zoo dua. Cov poov tshuaj nitrate yog chlorine tsis muaj potassium thiab nitrogen compound fertilizer. Tag nrho cov ntsiab lus ntawm phytonutrient potassium thiab nitrogen tuaj yeem ncav cuag li 60%. Nws muaj lub cev zoo thiab tshuaj lom neeg. Cov poov tshuaj sulfate yuav ua rau cov av nyuaj, thiab cov yeeb yaj kiab sulfate yuav ntau cov kua dej. Nitrate muaj cov dej tso tau zoo dua.
Daim ntawv thov ntawm poov tshuaj nitrate hauv thaj av muaj qhov zoo li nram no: vim tias nws tsis muaj qhov tsis haum, nws tuaj yeem ncaj qha thov rau cov av saum npoo av tsis tas yuav npog