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我们从1985年以来,采用~(80)Co—γ射线对香菇木屑培养料进行辐射灭菌试验,在1.0～1.8兆拉德(Mrad)剂量范围内,不仅能达到灭菌的目的,且可促进培养料中某些纤维素降解成可溶性糖,从而促使香菇菌丝生长,提高鲜香菇产量(《上海农业学报》,1986第3期)。本试验是在此基础上,应用最佳辐射灭菌剂量1.2Mrad 辐照香菇木屑培养料,进一步观察辐照培养料对鲜菇产量的影响。材料和方法试验采用本所1.5×10~4后里~(60)Co—Y 辐照源。(一)培养料:木屑78%、米糠20%、蔗糖和石膏各1%,含水量约55%。拌匀后装聚丙烯薄膜袋,每袋重0.75公斤,袋口套颈圈、扎橡皮筋加棉塞。
Since 1985, we used ~ (80) Co-γ-ray to irradiate mushroom mortar culture material for radiation sterilization test. It can not only achieve the purpose of sterilization in the dose range of 1.0 ~ 1.8 Mrad, Promote the culture of some cellulose degradation of soluble sugar, thereby promoting the growth of mushroom mycelium and improve the yield of fresh mushrooms (Shanghai Agricultural Journal, 1986, No. 3). This experiment is based on this, the best radiation sterilization dose 1.2Mrad radiation mushrooms sawdust culture materials, further observation of irradiated culture material on the yield of mushrooms. Materials and methods used in our laboratory 1.5 × 10 ~ 4 after the ~ (60) Co-Y radiation source. (A) training materials: 78% sawdust, rice bran 20%, 1% each of sucrose and gypsum, water content of about 55%. After mixing evenly with polypropylene film bag, each bag weighs 0.75 kg, bag mouth collar, tie rubber band plus tampon.