Heev ob peb tus neeg paub ib tug neeg ntawm Central America - qos yaj ywm zoo, zoo dua lub npe hu ua "qos yaj ywm". Tab sis heev vain, vim hais tias nws muaj ib tug loj xov tooj ntawm microelements tsim nyog rau qhov qub kev loj hlob ntawm lub organism.
Ntsib qab zib qos
Sweet potatoes yog elongated tubers ntawm conical duab nrog ib tug reddish-xim av ntawm daim tawv nqaij, qhov ceeb thawj ntawm uas muaj peev xwm ncav cuag 3 kg. Txhua qhov sib txawv ntawm qhov so raws li kev saj, xim nqaij tawv thiab kev ntxhib los mos.
Ntaus qhov sib txawv no yog qhov nyuaj, tab sis feem ntau qhov kev faib rau cov pawg hauv qab no yog siv:
- khoom qab zib - lawv yog liab los yog liab dawb, muaj nplua nuj saj;
- zaub - cev nqaij daim tawv daj nrog mildly qab aftertaste;
- fodder - muaj ib tug dawb nruab nrab thiab watery saj.
Tseem ceeb thaj chaw ntawm qos yaj ywm
Nyob rau hauv tas li ntawd mus saj tsis tau tab sis zoo siab nws composition thiab ua rau tib neeg lub cev:
- Vitamins - IB, C, B6.
- Cov ntxhia khoom - calcium, poov tshuaj, manganese.
- Beta-carotene.
- Beta-cryptoxanthin.
- Fiber ntau.
- Acids - ib qho quav, folic thiab lwm tus.
Xws li cov khoom ua rau kev txhim kho tus neeg mob general, purify cov hlab ntsha ntawm cov cholesterol , txo qib theem homocysteine thiab siab, tiv thaiv kev mob cancer thiab tsim muaj emphysema .
Txij li cov qos yaj ywm qab zib yog cov zaub uas tsis yog haiv neeg, loj hlob hauv peb tej kev mob yam tsis muaj kev paub txog nws yooj yim.
Cov qoob loo ntawm qos yaj ywm
Qhov no qab thiab noj qab haus huv zaub tuaj rau peb los ntawm lub teb chaws uas muaj kev nyab xeeb heev, yog li qhov tseem ceeb tshaj plaws rau kev cog qoob loo yog kev tiv thaiv mob khaub thuas.
Nws tsis yog lub noob thiab tubers ntawm qos yaj ywm uas yuav tsum tau cog, tab sis nws cov cuttings. Kev tsaws nyob rau hauv txoj kev no yuav tau txais koj ib tug zoo sau. Yuav kom loj hlob ib cov khoom cog, ib tug loj tuber yuav tsum muab tso rau hauv dej. Los ntawm kev ntsuas ntawm germination, cuttings 12-15 cm ntev yog raug muab tshem tawm los ntawm nws.
Cov qoob loo cog rau hauv cov av thaum lub caij nplooj ntoos zeeg, tom qab sov huab cua raug tsim thiab lub ntiaj teb ua kom sov. Ntshav dej nws yuav tsum tsuas yog thaum lub sij hawm rooting, ces nws yog ib qhov tsim nyog yuav tau txo, thiab ib lub hlis ua ntej sau - nyob rau hauv dav dav, nres.
Thaum zus nyob rau hauv sab qaum teb thaj tsam, Sweet qos yaj ywm raug pom zoo kom yuav cog nyob rau hauv txaj them nrog transparency polyethylene.