Effect of Chicken Manure and Tetracycline on Soil Urease and Phosphatase Activity

In this study,the effects of chicken manure and tetracycline on soil urease and phosphatase activities were investigated in a laboratory incubation.Soil sample were collected at 1,15,30,45,60 days and 75 days of incubation.Chicken manure applied to the soil activated significantly(P0.05),the activities of soil urease and phosphatase with the maximum activating ratio of 287.7% and 69.0% at 75 days and 60 days of incubation,respectively.The concentration of 0.06 mg·kg-1 tetracycline activated the activities of soil urease and phosphatase with the maximum activating ratio of 22.6% and 23.6% at 15 days and 45 days of incubation,respectively.And the concentration of 0.12 mg·kg-1 and 0.24 mg·kg-1 tetracycline inhibited the two kinds of soil enzymes activities throughout the incubation.The incorporation of chicken manure and various concentrations of tetracycline activated soil enzymes activities with the activation ratio more than 100% for both of the two soil enzymes.The results showed that chicken manure added to the soil contaminated by tetracycline could enhance the activities of soil urease and phosphatase enzyme and control the effects of tetracycline on soil urease and phosphatase activities.