Effects of Different Kinds of Nitrogen Source And Covering on Yield of Volvarieclla volvacea

The cultivation experiment of Volvariella volvacea indicated That different kinds of Nitrogen source in cultivation Materials would make the Biological efficiency of Volvariella volvacea increased 10.6%～18.7%,And it was demonstrated in our tests that the harvesting time of Volvariella volvacea was shorted 2 days.It also showed that the Volvariella volvacea yield could increase obviously by covering on cultivation Materials.