Effects of earthworm on number of soil bacterial physiological groups and enzyme activity in a maize residue amended wheat agro-ecosystem
蚯蚓对秸秆还田土壤细菌生理菌群数量和酶活性的影响

The influence of earthworm activities on the number of soil bacterial physiological groups and enzyme activity was investigated in an agro-ecosystem during the wheat growth season of a maize residue amended seven years rice-wheat rotation.Experimental plots in the rotation had five treatments,i.e.incorporation or surface-application of maize residues with or without earthworm inoculation and a control.The application of maize residues to soil gave higher number of ammonifiers,nitrogen-fixing bacteria,cellul...