<正>1IntroductionThemainproductionofYabulaisaltlakewasoriginalsaltandrecycledsaltmanyyearsago.Afterdecade’sproduction,thesalelakeresourceismoreandmoredeficient.Glauber’ssaltandmagnesiumsaltareconcentratedinbrinenow.Itcouldaffectthequalityofthesalt.Inrecentyears,researchhaddonemuchworkto