soil urease activity的用法和樣例：
例句
- The soil urease activity and the number of ammonium oxidizing bacteria tend to increase by the continuous cropping years.
隨著栽培年限的增加，土壤脲酶活性與氨氧化細菌數量有增大的趨勢。 - Fertilization could also increase soil enzyme activities, and soil urease and phosphatase activities could be used as the indicators of soil fertility.
施肥還可增加土壤酶活性，其中，土壤脲酶和磷酸酶活性可以作為衡量土壤肥力水平的指標。
