Research on the Correlations among Soil Microbes,Soil Enzyme Activity,and Soil Nutrient in Pit Mud

The research on four kinds of pit mud of different pit age of Luzhou Laojiao suggested that microbe number,sucrase activity,alkaline hydrolytic N content,rapidly- available K content,and organic substances content in pit mud were the highest in 400-year pit,then in 100-year pit, then in 40-year pit,and the least in 20-year pit.There was positive correlations between soil microorganism and soil enzyme activity.Through pathway analysis of each factor on soil microbe number and soil enzyme activity,it was found that rapidly-available P,alkaline hydrolytic N,sucrase, and catalase were the main factors influencing the total number of microorganism.