*3.3.1 Sensory evaluation*

Using the sensory evaluation method (**Table 1**), we can quickly and intuitively judge whether the silage material is deteriorating.

The author has carried out anaerobic pretreatment on dry corn stover (**Figure 3**). It can be seen that after 28 days of storage, there is no mildew in the samples of dry corn stover silage. The color of the silage material is yellow and has a strong acid flavor, indicating that the process was successful.
