Study Of Screening Good Strains And Key Techniques For Culturing Using No-wood Material On Auricularia Auricular

More than 20 strains of Auricularia auricula(L.ex HooK)Uuderw.werecollecteed.6 strains with good character were isolated and purified. From screening test, strain 988 and strain 2008 were got as good strains The results show that the production of strain 988 and strain 2008 is 15%~20% higher than that of common strains ;Their basidiocarp is 2.8~3.3mg/100g higher than that of common strains; Strain 988 and strain 2008 also have higher stress resistance.The key techniques of culturing Auricilaria auricula using substitute was researched. The results show that Auricilaria auricula is better cultured using substitute at 13癈 or so in spring, the contaminate rate is lower and the production is higher. The production is higher when the wood-bits is the main part of substitute, it is highest when the wood-bits proportion of soft broad leaf and hard broad leaf is 1: 2;The best straw-substitute is which mainly made of soybean-straw mixed with some wood-bits. In culturing mycelium period, mycelium grow strongly when temperature is 26℃~28℃ at early days,23℃ at medium term and 20℃ at later days, and at this condition its disease resistance and production are enhanced. The method of accelerating germination is related with primodium genesis and contamination; The higher moisture is good for primodium genesis, but the temperature should be controlled in order to prevent Trchoderma', Controlling water and temperature is important in field management, it' s good for basidiocarp growing and resistance of mycelium that the water is controlled under dry and moisture in turn; Sun-shine supplement with clotrimagole has good control effect to Trchoderma, the control effect is more than 90%.