2.3 Soil Stoichiometric characteristics
Soil C/N, C/P and N/P for various treatments were shown in Table4. Compared with TS, the TSD and TD significantly decreased the C/N in the 0-30 cm soil depth. The C/N was in order of TD < TSD < TS in same soil layers. The C/P and N/P showed the same trend as changes in C/N.