The Feature of Soil Enzyme Activities With Different Crops and Soil Nutrient in the Plateau Region

Taking soil which growing different crops in as material,using the method of field sampling and chemical analysis,the catalase,urease,sucrase activities and the vertical distribution of these soil enzyme activities in wheat,barley,cole and corn at high altitude were studied,the correlation of the three soil enzyme activities and the soil physical and chemical properties were analyzed.The results showed that:the soil enzyme activities of four kinds of corps decreased with the soil depth increasing,and soil urease activities in the corn were the highest,it showed that metabolic capacity of soil nitrogen was higher.Indicators of soil nutrient and soil enzyme activities in the study were positively correlated,the activity of the catalase and urease and soil organic matter content was significantly positively correlated.