During April to October 2004,a lysimeter experiment was conducted in Laizhou region to study the fluxes of water,salts and nutrients in a Soil-Plant-Atmosphere continuum (SPAC) under irrigation with saline aquaculture wastewater The experiment was designed to have five treatments:CK (plant without irrigation) and four treatments of irrigation with Leaching Fraction (LF) being 0.1,0.2,0.3 and 0.4,respectively Results show that in 4 treatments (LF=0.1,0.2,0.3 and 0.4),the irrigated water lost through evaporation from the soil and transpiration from the plants accounted for 36.5%,36.2%,37.0% and 37 3%,respectively,of the total evapotranspiration (ET_C) of Jerusalem artichoke throughout its growing season,the accumulation of saltreached 91.1,94.1,98.7 and 107.1 g,ammonium nitrogen 2.00,2.29,2.27 and 2.82 mg,nitrate nitrogen 1.81,1.40,1.29 and 0.92 mg and reactive phosphate 3.03,2168,2144 and 1167 mg,respectively in the root zone1 In conclusion,irrigation with saline aquaculture wastewater may play an important role in applying Jerusalem artichoke with water and nutrients unless positive measures are taken to control the negat ive impact of over accumulation of saltl.