Effects of Different Nitrogen Sources on the Growth Condition of Fruiting Bodies of Cordyceps Mycelia

The first systematic study of cordyceps strain the liquid preparation and making out of grass and other artificial cultivation of bacteria which is necessary for the appropriate nitrogen source throughout the process.Common inorganic nitrogen as KNO3,urea,common organic nitrogen source as silkworm pupa powder,peptone,egg white liquid,fish meal and other experimental group,setting up blank control to compare the quality of observation of bacteria,mycelia growth conditions,bacteria and germination of hair.The experiment proved that a variety of nitrogen sources had a certain role in promoting growth of cordyceps.Organic nitrogen was significantly better than inorganic nitrogen and liquid bacteria grown well peptone.To make the most bacteria out of grass medium,the good source of nitrogen was followed by chrysalis powder,peptone,fish meal,egg white liquid and other organic nitrogen source.Silkworm chrysalis powder had a strong role in the promotion of a grass,but the anti-infection ability was weaker than other organic nitrogen sources.Peptone,egg white liquid,fish meal and other organic nitrogen source were rich in nitrogen nutrition and the nutrition was comprehensive.Also,the nutrition was easy to be absorbed by mycelium,mycelium growth robust.When preparing for liquid nitrogen,peptone was better.Hair bacteria out of grass to cover the pupa nitrogen compound powder was better.