Qej muaj keeb kwm ntev ntawm kev cog qoob loo hauv ntiaj teb thiab feem ntau cog rau sab qaum teb thiab sab qab teb ntawm Tuam Tshoj. Keeb xeeb los ntawm sab hnub poob Asia lossis Europe, nws yog nyob rau hauv Central Asia thiab thaj av Mediterranean thiab tau coj mus rau Tuam Tshoj los ntawm Zhang Qian nyob ib ncig ntawm Han Dynasty. Xyoo pua 9th nws tau qhia rau Nyiv thiab South Asia, kev cog qoob loo tau tshwm sim hauv Africa thiab South America hauv thawj ib nrab ntawm lub xyoo pua 16th thiab tau qhia rau North America hauv xyoo pua 18th thiab tam sim no tau cog qoob loo thoob plaws ntiaj teb.
Nyob rau hauv xyoo tas los no, Tuam Tshoj txoj kev cog qoob loo thiab kev lag luam tau tsim sai heev, nrog rau cov chaw tsim khoom tseem ceeb yog Shandong, Jiangsu, Henan, Sichuan thiab Shaanxi thiab lwm yam. Nyob rau hauv 2016, Tuam Tshoj lub qej cog thaj tsam mus txog 791,257hm² thiab ntau lawm mus txog 21,197,131t, ob qho tib si yog nyob rau hauv thawj qhov chaw nyob rau hauv lub ntiaj teb no. Qej tam sim ntawd tawg thaum nws puas lawm los tsim cov pungent allicin, tso ib tug muaj zog tsw ntawm sulphide, raws li ib feem ntawm nws ib txwm evolved self-defence thiab tiv thaiv mechanism.
Thaum tib neeg yog ib txwm rhiab heev rau qhov qab zib, qhov kev saj thiab kev nyiam rau cov qej ntau yam tau txais tag nrho, thiab qej tsim cov khoom sib txawv nyob ntawm seb nws tau npaj li cas, thiab muaj nyob rau hauv cov zaub mov kab lis kev cai ntawm yuav luag txhua lub teb chaws. Ntxiv nrog rau nws cov khoom noj muaj txiaj ntsig, tib neeg kuj xav txog kev tiv thaiv cov tshuaj qej, uas yog siv los tua kab thiab kab tsuag thiab, tom qab ntawd, los tiv thaiv kev phem. Qej kuj yog cov tshuaj ntsuab muaj ntau yam, nrog rau nws cov teebmeem ntawm cov zaub mov stagnation, serialization thiab tswj kab, thiab tau sau tseg rau hauv cov phau ntawv tshuaj ntsuab xws li Tang materia medica thiab Compendium of Materia Medica (Txhua yam yog cov ntawv sau tshuaj suav classical).
Qej tsis yog tsuas yog siv los ua cov khoom xyaw hauv do-fries, tab sis kuj ua rau kom qab los noj mov, txhawb kev tso tawm ntawm gastric acid thiab txhawb peristalsis hauv plab hnyuv. Qej muaj allicin thiab yog nplua nuj nyob rau hauv cov zaub mov thiab cov vitamins, uas muaj ib yam khoom noj muaj txiaj ntsig. Nws ntxiv tsw rau cov zaub mov thaum ua noj ua haus thiab ua kom qab los noj mov, thaum allicin stimulates gastric acid secretion thiab peristalsis, uas muaj kev qab los noj mov.
Kuv mam li qhia koj ntxiv txog peb cov qej qej ntau yam tsev neeg tom ntej, yog li nyob twj ywm!
