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).