1.College of Agrogomy,Guizhou University，Guiyang,Guizhou 550025； 2.Science and Technology Bureau of Fuquan City in Guizhou Province，Fuquan,Guizhou 550500；3.Yinjiang County Edible Fungus Industry Office in Guizhou Province，Yinjiang,Guizhou 555200
The mycelium growth and yield of 4 different main materials (Ponulus，Pseudo cacia，Salix babylonica，Alnus nepalensis) were studied.The results showed that Alnus nepalensis and Salix babylonica were suitable for used as fast growing trees of culture material of Auricularia auricula; the mycelium of Auricularia auricula grew white，thick and sturdy in the Alnus nepalensis group，and the speed of growth was the fastest，0.50 cm/d，which was much faster than in both the Pseudo cacia group，Salix babylonica group(P＜0.01),and faster than the CK(P＜0.05).The dry yield of Auricularia auricular in the Alnus nepalensis and the Salix babylonica group were higher than others,which＞430 g/10 bags，and，there were significant differences between the Alnus nepalensis group and CK.The absolute biological conversion on the Alnus nepalensis group was the highest，about 9.62%.And all the treatment groups of absolute biological conversion rate were higher than the CK.