Chiv qib DAP tsuas yog siv los ua cov khoom siv raw ntawm qhov muaj zog ntau ntawm Nitrogen thiab Phosphorus compound chiv. Nws tseem yog ib qho chiv ua uas ib ntus ua rau cov av pH (ntau ntxiv). Nws yog ib qho ntawm cov khoom xyaw tseem ceeb hauv yuav luag txhua cov poov xab thiab cov ua kom muaj zog, ua lub luag haujlwm zoo ntawm Nitrogen thiab Phosphate. Nws yog cov tshuaj chiv zoo siv hauv cov zaub, txiv hmab txiv ntoo, nplej thiab nplej.