基于腺带刺沙蚕和细基江蓠调控水环境的池塘养殖模式研究

Pond aquaculture mode based on the water quality manipulation system with Neanthes glandicincta and Gracilaria tenuistipitata

本研究构建了生态位互补的凡纳滨对虾(Litopenaeus vannamei)、黄鳍鲷(Sparus latus)、鲻鱼(Mugil cephalus)、腺带刺沙蚕(Neanthes glandicincta)和细基江蓠(Gracilaria tenuistipitata)的生态养殖模式。结果表明,腺带刺沙蚕和细基江蓠不仅能对虾池污染环境起生物修复作用,而且经济效益显著增加。实验池的营养盐和化学需氧量均明显低于未套养腺带刺沙蚕和细基江蓠的对照池,铵盐、总氮、活性磷酸盐和化学需氧量分别下降了51.57%、31.69%、43.33%和15.65%,与对照池存在极显著差异(P<0.01);饵料系数从1.52下降到1.47,投入产出比从0.57下降到0.50。

A pond ecological aquaculture mode and a water quality manipulation system were established and studied. Based on the water quality manipulation with Neanthes glandicincta and Gracilaria tenuistipitata, the healthy ecological aquaculture pond mode could be maintained. Not only did the aquaculture mode arrive at self-repairment of aquaculture environment, but also economic benefits increased notably. The concentrations of NH3-N, TN, PO43- -P, and COD in the experimental pond were much lower than that of the control pond （absent of Neanthes glandicincta and Gracilaria tenuistipitata）, and decreases of 51.57%, 31.69%, 43.33% and 15.65% were seen, respectively. However, feed efficiency and the ratio of input to output were significantly reduced from 1.52 to 1.47 and from 0.57 to 0.50, respectively.