QTM controlled atmosphere drying experiment equipment was used to regulate the O 2 content in the drying by displacing part air with nitrogen as drying medium.

• 用氮气置换部分空气作为干燥介质 ；通过QTM气调干燥实验设备调节干燥过程气体的氧气含量 ；以蘑菇的褐变度为考核指标进行降氧干燥试验 .