Study on the integrated multi-trophic aquaculture composed of Salicornia bigelovii and Litopenaeus vannamei
In order to reduce the toxic effect of inorganic nitrogen negative electrode in the water of Litopenaeus vannamei culture,L.vannamei and halophyte Salicornia bigelovii were used to establish an integrated multi-trophic aquaculture system(IMTA).The removal effect of pollutants was also investigated.The results showed that,the temperature,pH,and dissolved oxygen of the cultured water maintained relatively stable with fluctuations in IMTA.In IMTA,the removal rates of NO2--N and NH4+-N from the culture water were 88.88％and 91.40％,respectively,and the concentration of NO3--N was higher than that of the single culture system of L.vannamei.The relative growth rate(RGR)of L.vannamei in IMTA was higher than that of single culture of L.vannamei.The RGR of L.vannamei in two systems were 4.08％and 3.27％,respectively.It indicated that,in IMTA,the absorption and utilization of inorganic nitrogen from culture water decreased the concentrations of NH4+-N and NO2--N,but improved the growth and nutrient accumulation of L.vannamei.This IMTA method has potential values of popularization and application.
万方数据
维普
