4Ritvoa G, Samochaa T M, Lawrence A L. Growth of Penaeus vannamei on soils from various Texas shrimp farms, under laboratory conditions[J]. Aquaculture, 1998, 163(1-2): 101- 110.
5Boyd C E. Bottom soils, sediment, and pond aquaculture[M]. New York, Chapman and Hall, 1995.
6Bernard A M. Partial extraction of metals from aquatic sediments [J]. Environmental Science & Technology, 1977, 11(3): 277-282.
7Vinoent S A. Determination of metal enrichment factors[J]. Environmental Science & Technology, 1991 (25): 1760-1766.