Relationship between community of soil mites and environmental factors in farmland

The relationship between community of soil mites and environmental factors was studied in farmland of experement station. The species and quantity of soil mites was increased with increasing soil nutrients,but decreased with increasing soil bulk density and pH.Soil porosity and aeration got well,furrow layer incrassated,the organic matter increased and there were more species and quantity of soil mites in the plots which have used EM compost for a long time.