Effects of Different Mechanized Organic Fertilization Methods on Soil Enzymes Activities in a Corn Field

Abstract

In this experiment, continuous cropping corn brown soil of three years as the research object. It was be explored that the different mechanized organic fertilizer on the main soil enzyme activities in several agricultural productions, which is in order to boil down the soil fertilization and improvement methods for reference. Tillage and fertilization were carried out before and after sowing and harvesting, and soil samples were collected and analyzed regularly at different growth stages. We found that the increment of soil enzyme activities by various mechanized organic fertilization methods was significantly higher than that of conventional fertilizer application in a corn growth period or in the whole corn growth period. Among them, mechanization of rotting cow dung and returning straw to the field can obviously improve the activities of soil urease and phosphatase. The mechanical application of soil sucrose enzymes to mature cow dung was the best, followed by straw returning to the field. In addition, mechanized application of straw to the field can significantly increase the activities of catalase and cellulase in the soil.