Ua ntej muaj xws li kev tshwm sim tseem ceeb raws li cog, thawj zaug koj yuav tsum tau txiav txim siab seb yuav tsum nrhiav thaum twg xaiv cov grapes. Ua ntej no, qhia kom meej seb qhov muab ntau yam muab ib xyoo tawm los, qhov twg yog qhov zoo tshaj ntawm cov txiv hmab txiv ntoo. Secondly, dab tsi yog qhov degree ntawm laus ntawm tua. Qeb peb, yuav tsum coj mus rau hauv tus account lub cheeb tsam ntawm lub cheeb tsam rau yav tom ntej ntawm vineyard, koj yuav tsum tau xaiv ntau yam resistant rau cracking.
