5USDA/NASS. 2002 Census of Agriculture and Historical Highlights [M].Washington DC, USDA. 2006.
6Osterberg D, David Wallinga. Addressing Externalities from swine production to reduce public health and environmental impacts[J]. American journal of public Health 2004,94(10):1703-1709.
7Walliams H. Fighting corporate Swine[J]. politics and society, 2006, 34(3):369-398.
8Cochran K, Rudek J, Whittle D. Dollars and Sense: An Economic Analysis of Alternative Hog Waste Management Technologies[M]. Washington, DC, Environmental Defense, 2002:78-79.
9Ribaudo M, Cattaneo A, Agapoff J. Cost of Meeting Manure Nutrient Application Standards in Hog Production: The Roles of EQIP and Fertilizer Offsets[J]. Review of Agricultural Economics, 2004, 26(4):430-444.
10McBride W N. Key Economic and Structural Relationships in US Hog Production[M].Washington, DC, USDA/ERS, 2003.
