Screening for cultivation medium formula of Pleurotus pulmonarius with eucalyptus sawdust as main material
[Objective]The optimal medium formula with eucalyptus sawdust as main material for cultivation of Pleurotus pulmonarius was screened,in order to provide theoretical basis for harmless treatment and recycling application of eucalyptus sawdust.[Method]The mushroom experiment was conducted with four cultivation medium formulas of P.pulmonarius.35% cotton seed hull,corncob,mulberry sawdust,bagasse were added into basal culture medium(50.0% eucalyptus sawdust+10.0% wheat bran+3.0% lime+1.0% gypsum+1.0% superphosphate),respectively.During experiment period,the mycelial growth,sporocarp production,biological efficiency and economic benefits of different formulas were analyzed comparatively.[Result]The results showed that,the cultivation medium supplemented with eucalyptus sawdust had the best comprehensive performance,and reduced material cost,enhanced economic benefits remarkably,with biological efficiency of 72.5%,and input-output ratio of 1∶1.96.The cultivation medium supplemented with cotton seed hull had biological efficiency of 74.2%,input-output ratio of 1∶1.65 because of its higher cost.The cultivation medium supplemented with bagasse had biological efficiency of 65.3%,input-output ratio of 1∶1.99,due to its the lowest cost.However,the cultivation medium supplemented with corncob had the worst comprehensive performance,with biological efficiency of 62.1% and input-output ratio of 1∶1.60.[Conclusion]Eucalyptus sawdust mixed with mulberry sawdust could be used as local material formula for high-yield and high-efficiency cultivation of P.pulmonarius,which should be applied and popularized in edible fungi cultivation regions of Guangxi.
Pleurotus pulmonariuseucalyptus sawdustbiological efficiencyformula for cultivation