Four strains of Pleurotus ostreatus were grown; on rape stem me-dia. Pleurotus bulgaricus got the best results. Orthogonal test showed that thebest media composition for Pleurotus ostreatus was:broken rape stem (72%),pulverized rape stem (10%), bran coat (15%), sugar (1.5%) and calcium super-phosphate (1.5%). AS rape stem media has low N content and poor water retain-ing capacity,it is advisable to use aerophili...