Using the dry Allium macrostemon Bunge's chlorophyll content as indices, a small modified atmospheric dryer ( QTM) developed by the authors was used to conduct the experiment for drying Allium macrostemon Bunge, in which CO2 was used as drying media to replace partial air. 在自行研制的小型气调干燥机(QTM)实验设备,用CO2调节干制过程气体的O2含量,以干制小根蒜茎叶的叶绿素含量为考核指标进行降氧干燥试验。