The urase activity of soil under different years of continuous cropping and growth stages .
不同连作年限和生育时期土壤脲酶活性。
The result showed that organo-inorgano-mixed fertilizer could increase the quantity of availability , strengthen the activity of proteinase , sucrase , urase and peroxidase in the sugarcane roots , and increase the sugarcane yield and sugar content .
Change of enzyme activities ( urase , alkali phosphatase , hydrogen peroxidse ) in the soil were measured periodically to probe the effect of fertilizing patterns on the enzyme activities , so that to provide the scientific basis for the improvement of fertilizing to the salty soil .
