1.Institute of Continuing Education，Jilin Agricultural Science and Technology University，Jilin，Jilin 132101; 2.Jilin Province Changbai County Ginseng Industry Development Research Center，Changbai，Jilin 134400; 3.Institute of Biological Engineering，Jilin Agricultural Science and Technology University，Jilin，Jilin 132101
The effects of four mineral elements (Na，K，Cu and Mg) on the growth of mycelium of Agaricus brunnescens Peck with the colony size as the norm through the plate cultivation method were studied.The results showed that the compound concentrations of different mineral elements which improved the growth of mycelium were 0.9960 g/L (NaNO3)，2.5 g/L (KH2PO4)，0.012 g/L (CuSO4) and 0.4980 g/L (MgSO4) respectively.