Activities of soil enzymes的用法和样例：
- Abstrac t: The activities of four kinds of soil enzymes in turfs in different growth years was studied.
- Abstract : The soil nutrient, soil microorganisms and soil enzyme activities of soil under five different stands in Alar were studied.
摘要 ： 对塔里木河上游果林地和胡杨林地土壤养分、微生物数量和酶的活性变化进行了研究。
- The main factors with the most influence were urease and uratease activities by The Principal Component Analysis of soil enzymes.
- The activities of five soil enzymes all increased under PSB or organic fertilizer applications, and the effect of organic fertilizer was more apparent than that of PSB.