1. Pre-kugadziriswa kwemvura yekugadzira mvura Mitumbi yemvura yakasikwa kazhinji ine madhaka, ivhu, humus uye zvimwe zvakamiswa zvinhu uye colloidal tsvina uye mabhakitiriya, fungi, algae, mavhairasi uye mamwe ma microorganisms, ane kumwe kugadzikana mumvura, ndiyo huru. chikonzero chekusagadzikana kwemvura, ruvara uye kunhuwa.The...
Verenga zvimwe