Nthawi zambiri, zokolola za zinyalala zomwe zimakonzedwa kukhala miyala zimakhala pafupifupi 80-90%, ndiye kuti, tani imodzi ya zinyalala imatha kuswa matani 0.8-0.9 a miyala, chifukwa mawonekedwe a zinyalala m'magawo osiyanasiyana ndi osiyanasiyana, monga: kukhuthala, kukhazikika kwa ufa. Kuchuluka, chinyezi, ndi zina zotero, ngati nthaka ndi zonyansa zikutsutsana ...
Werengani zambiri