For the synthesis of carotenoids bacterium Erwinia uredovora. MgSO_4 had the best positive effects among 8 inorganic salts,which can promote the growth of Erwinia uredovora and increase its pigments yield.

• 供试的8种无机盐中,MgSO_4的单因子效应最好,可促进噬夏孢欧文氏菌(Erwinia uredovora)的生长和类胡萝卜素合成。