1[1]Cookson W R,Cornforth I S,Rowarth J S.Winter soil temperature (2-15 ℃) effects on nitrogen transformations in clover green manure amended or unamended soils; a laboratory and field study[J].Soil Biology and Biochemistry,2002,34(10):1401 -1415.
7[13]Jerry Co leman,Keith Hench,Keith Garbutt,A lan Sexstone,Gary Bissonnette and Jeff Skousen.Treatment of domestic wastewater by three plant specific in constructed wetlands[J].Water,Air,and Soil Po llution,2001,128:283 295.