Effects of Different Fertilizer on Soil Urease and Alkaline Phosphatase Activity

Ureas and alkaline phosphatase activity of soil in different fertilizer was studied in this experiment.The results showed urea,chicken manure,straw increased soil urease activity by 15.38 %,55.94 %, 27.97 % and soil alkaline phosphatase activity by 2.31 %,16.20 %,10.42 % respectively compared with the control in the Ⅰ fertilization level.Three fertilizers byd soil urease activity by 24.48 %,67.83 %,46.15 % and alkaline phosphatase activity by 9.72 %,28.01 %,37.04 % respectively in the Ⅱ fertilization level. Urea,chicken manure,straw increased soil urease activity by 37.76 %,86.71 %,62.24 %,and soil alkaline phosphatase activity by 28.47 %,65.74 %,58.10 % respectively in the Ⅲ fertilization level.The affect order for soil urease activity by 3 fertilizers in different fertilizer levels was chicken manure,straw,urea.The affecting order for soil alkaline phosphatase activity was chicken manure,straw,urea in Ⅱ fertilization level.The affecting order for soil alkaline phosphatase activity was straw,chicken manure,urea in Ⅰand Ⅲ fertilization level.