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运用生物沉积法在四十里湾养殖海区现场对栉孔扇贝 (Chlamysfarreri)的生长余力和C、N、P元素收支进行研究。结果表明 ,四十里湾不同海区生长余力SSFG差别很大。Ⅰ龄栉孔扇贝SSFG为 - 0 .74～ 2 4 .0 8J/ (ind·h) ,SSFG与饵料浓度CPOM 呈正相关关系。SSFG负值的出现主要与低饵料浓度有关。C、N、P的生长余力 (SSFG C、SSFG N、SSFG P)分别与CPOC、CPON和CPP呈正相关关系。在N的生长余力SSFG N计算中 ,如果仅考虑NH4+ N排泄 ,而不考虑其他形态N的排泄 ,就可能产生相当大的偏差 ,偏差范围为 11%～ 36 % ,SSFG N越低 ,产生的偏差就越大。在饵料不足、扇贝生长受到限制的环境下计算SSFG N时 ,必须考虑其他形态N的排泄。在栉孔扇贝浅海养殖中 ,养殖密度和规模过大显然会影响扇贝本身的生长。
Biomass deposition method was used to study the growth capacity and C, N and P balances of Chlamys farreri at the site of Sai Li Wan aquaculture area. The results show that there is a great difference in SSFG between the different sea areas in Sishili Bay. SSFG of Ⅰ-age Chlamys farreri was -0.74-2.40.8J / (ind · h), SSFG was positively correlated with dietary concentration of CPOM. The occurrence of negative SSFG mainly associated with low feed concentration. The residual capacity (SSFG C, SSFG N, SSFG P) of C, N and P were positively correlated with CPOC, CPON and CPP, respectively. In the calculation of SSFG N for the growth capacity of N, if only the excretion of NH4 + N is considered and the excretion of other forms of N is not taken into consideration, considerable deviations may occur with the range of 11% -36% and the lower SSFG N, The greater the deviation When SSFG N is calculated in an environment where feed production is limited and scallop growth is limited, other forms of N excretion must be considered. Chlamys farreri shallow-sea farming, breeding density and size is too large will obviously affect the scallop’s own growth.