Study on soil enzyme activities effected by fertilizing cultivation
培肥对土壤酶活性影响的研究

The soil enzyme activities and organic matter content were assayed in long-term fertilizing soil samples, the results showed as follows:Soil enzyme activity remarkably varied with the fertilizers, especially soil urease. The peroxidase was less and soil urease activity could be as an index of fertility; Plant could enhance hydrolase activity; the maize and chemical fertilizer might improve total enzymatic activity level. The enzyme activities were increased except non-fertilizing treatment. The main factors with the most influence were urease and uratease activities by The Principal Component Analysis of soil enzymes.