4Smith J.H.Our Responsibility in Animal Waste Management[A]. NationalLivestock,PoultryandAquacuhureWasteManagemen[C].Missouri : Proceedings of the National Workshop, 1991 : 121- 127.
5Thyselius L.Manure Handing System-The Techniques of Today and Tomorrow [A].Agriculture Waste Management and Environmental Protection[C].Braunschweig:Proceedings of the 4 th International CIEC Symposium. 1988.235-242.
6Sutton A.L., Huber D.M. ,Jones D.D..Strategies for maximizing the nutrient utilization ofanimalwaste as a fertilizer resource[A]. A-cuhuralandFoodProcessingWaste[C].Chicago:Proceedings of the 6 th International Symposium on Agricultural and Food Processing Waste, 1990:139-145.
7US EPA.Guidingprinciples forconstructed treatment wetlands: providing for water quality and wild lifehabit [M].Washington DC: US EPA, Office of wetlands, Oceans and Watershed,2000.
8Poach M ESwine wastewater treatment by marsh-pond-marsh constructedwetlandsundervaryingnitrogenloads[J].Ecological Engineering, 2004 (23) : 165-175.
