Dab tsi yog qhov txawv ntawm Kab lis kev cai nruab nrab thiab Petri tais

Lub tais petri yog ib qho cuab yeej siv hauv chav kuaj, feem ntau yog siv rau cov kab mob los yog kab mob ntawm tes. Nws yog tsim los ntawm lub tiaj tus disc zoo li hauv qab thiab ib lub hau, thiab feem ntau yog ua los ntawm yas los yog iav. Cov ntaub ntawv ntawm cov tais diav petri yog muab faib ua ob hom: yas thiab iav. Iav petri tais tuaj yeem siv rau cov khoom siv cog, kab lis kev cai microbial, thiab tuaj yeem siv rau kev coj noj coj ua ntawm cov tsiaj hlwb. Yas petri tais yuav ua los ntawm cov ntaub ntawv polyethylene. Lawv muab faib ua cov khoom siv pov tseg thiab siv ntau yam. Lawv tsim nyog rau kev ua haujlwm ntawm scribing, inoculating thiab cais cov kab mob hauv chav kuaj, thiab tsim nyog rau kev cog qoob loo ntawm cov khoom cog.

Kab lis kev cai nruab nrab yog hais txog cov khoom noj khoom haus uas tau npaj los ntawm kev sib xyaw ntawm cov khoom noj sib txawv rau kev loj hlob thiab kev loj hlob ntawm cov kab mob, nroj tsuag lossis tsiaj txhu (los yog cov ntaub so ntswg). Feem ntau, lawv muaj carbohydrates, nitrogenous tshuaj, inorganic ntsev (nrog rau cov kab mob), cov vitamins thiab dej. Cov kab lis kev cai nruab nrab tsis yog tsuas yog cov khoom siv tseem ceeb uas muab cov khoom noj ntawm tes thiab txhawb kev loj hlob ntawm tes, tab sis kuj yog qhov chaw nyob rau kev loj hlob ntawm tes thiab kev loj hlob.