NOVELTY - Base material comprises 300-600 pts. wt. bagasse, 300-500 pts. wt. sludge, 0-100 pts. wt. straw, 0-200 pts. wt. corn, 0-10 pts. wt. bran, 5-20 pts. wt. compound fertilizer, 10-50 pts. wt. gypsum, 20-50 pts. wt. lime, and 0-5 pts. wt. urea.    USE - Base material used for culturing Agaricus blazei (claimed).    ADVANTAGE - The base material improves comprehensive utilization of factory byproduct, reduces production cost and environment pollution, and has biological conversion rate of more than 38%.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for cultivation of Agaricus blazei comprising selecting mushroom shed which is flat and well ventilated has convenient water source and drainage; piling bagasse, prewetting for 2 days to a water content of 70%, spreading wet bagasse at the lowest layer, uniformly spreading other raw materials, dissolving compound fertilizer and urea in water, spreading with bagasse layer, piling layer by layer to a height of 1.5 m, width of 1.5 m and length of 2.0-3.0 m, inserting wood sticks every 0.6-1.5 m, de-plugging material stack to form vent holes to promote material permeability, covering material pile with plastic film, preserving heat and moisture for 2 days, uncovering, increasing air permeability; piling for 4 days, turning by shaking culture medium, exchanging upper and lower layer material, spreading and lime powder, turning for the second time, turning for the third time after 3 days, spraying each layer with 0.2% dichlorvos, 1% formaldehyde solution, and pesticide, adjusting pH to 7.0-8.0, adjusting water content to about 65%; sterilizing mushroom house twice by uniformly spraying 0.5% dichlorvos, closing door and window for 24 hours; and using formaldehyde mixed with wood chips, closing door and window, fumigating for 2 days, and opening door and window; fermenting at high temperature, quickly moving to mushroom room, hot filtering to mushroom bed, laying material, closing door, window and ventilation opening, naturally raising the temperature, and fermenting; leveling surface, seeding, soil covering and fruiting.