Since the urease activity in soil is close correlated with the growth of stem lump mustard and soil metabolism, which is a key indicator of soil ecology and soil fertility. 土壤脲酶活性高低反映出莖瘤芥生長(cháng)和土壤代謝狀況，可作為莖瘤芥土壤生態(tài)和肥力水平的一個(gè)良好指標。
Methods of environmental investigation were adopted to study the contents of heavy metals in the soil at the tumorous stem mustard cultivation base in Nantuo, Fuling. 采用環(huán)境調查的方法研究了涪陵南沱鎮莖瘤芥種植基地土壤重金屬含量。
