Fig.
S2. The average well color development (AWCD) of soil
microorganisms under different straw returned.Fig.
S3. The AWCD values and diversity indices at 120 h of incubation under
different straw returned.
Note: a : AWCD value; b : Shannon index;c :
Simpson index; d : Pielou index. Different lowercase letters
indicate significant differences between different treatment (P < 0.05).