Effects of different base fertilizers on enzyme activities in Medicago sativa rhizosphere soil

Abstract

In order to preliminarily explore the effects of different base fertilizers on soil ecology, taking Medicago sativa as the research object, the changes of urease, sucrase and catalase activities in Medicago sativa growing soil after applying different base fertilizers (A1: adding 210g cow dung I basin, A2: adding 250g cow dung I basin, B1: adding 0.5g compound fertilizer I basin, B2: adding 1.0g compound fertilizer I basin) were discussed. The results showed that the soil invertase content of Medicago sativa Planted with compound fertilizer (B1) was the highest, up to 48.884mgIg. The statistical comparison of the average content of soil sucrase is as follows: cow manure (A2) > compound fertilizer (B2) > cow manure (A1) > compound fertilizer (B1) > no base fertilizer (CK). The soil urease content of Medicago sativa Planted with cow dung (A2) was the highest, which could reach 6.059 mg I g. The statistical comparison of the average content of soil urease is as follows: cow manure (A2) > cow manure (A1) > compound fertilizer (B2) > no base fertilizer (CK) > compound fertilizer (B1). The soil catalase content of Medicago sativa Planted with compound fertilizer (B1) was up to 0.09046mgIg. The statistical comparison of the average content of soil catalase is as follows: compound fertilizer (B1) > cow dung (A2) > no base fertilizer (CK) > cow dung (A1) > compound fertilizer (B2). The application of different base fertilizers had a very significant effect on the contents of soil urease, sucrase and catalase. The application of cow manure significantly increased the activities of soil sucrase and urease, and the effect was more significant with the increase of fertilizer application. The application of organic fertilizer (cow manure) significantly increased soil enzyme activity than inorganic fertilizer (compound fertilizer).