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研究了在一定养殖空间内刺参–鼠尾藻适宜的养殖容量和养殖密度。将不同密度的平均体重为(16.7±0.95)g的刺参和鼠尾藻混养在1 m3水体的塑料桶内,实验分为12组,每组设3个重复,对刺参、鼠尾藻的生长及养殖水环境因子的变化情况进行了研究与分析。结果显示,1)刺参、鼠尾藻平均日增重率(Mdwg)和特定生长率(SGR)受刺参密度和鼠尾藻密度影响显著(P<0.05)。作为对照,无鼠尾藻、刺参密度为750、500、250 g/m3时,其生长均相对较差;刺参密度为250 g/m3、鼠尾藻密度为1000、1500 g/m3时,刺参生长相对最好。刺参密度为750 g/m3、鼠尾藻密度为500 g/m3时,鼠尾藻特定生长率(SGR)最大;刺参密度为250 g/m3、鼠尾藻密度为1500 g/m3时,鼠尾藻特定生长率(SGR)最小;2)NH4+-N、NO2–-N、NO3–-N和PO4–-P含量变化受刺参和鼠尾藻养殖量的影响显著(P<0.05)。无鼠尾藻,刺参密度为750、500、250 g/m3时,实验组NH4+-N、NO2–-N、NO3–-N和PO4–-P含量相对较高,其中,刺参为750 g/m3实验组含量最高;刺参密度为250 g/m3、鼠尾藻密度为1000、1500 g/m3时,实验组NH4+-N、NO2–-N、NO3–-N和PO4–-P含量相对较低。研究结果显示,鼠尾藻密度的大小对促进刺参的生长有非常显著的影响,同时对养殖水体中的营养因子具有较强的吸收能力。本研究条件下,刺参密度为250 g/m3、鼠尾藻密度为1000、1500 g/m3模式参藻搭配比例较合适,其生态互利效果最好。
The appropriate culture capacity and stocking density of Stichopus sophori in a certain culture space were studied. The different density of sea cucumbers with the average body weight of (16.7 ± 0.95) g and the algae were mixed in plastic buckets of 1 m3 water body. The experiment was divided into 12 groups with 3 replicates in each group. Algae growth and aquaculture water environmental factors were studied and analyzed. The results showed that: 1) The average daily rate of weight gain (Mdwg) and specific growth rate (SGR) of sea cucumber Apostichopus japonicus and Sargassum were significantly affected by the density of Stichopus japonicus and Sargassum (P <0.05). As a control, the growth of Sargassum fusiforme without Sargassum fusiforme was relatively poor at the rates of 750, 500 and 250 g / m3, respectively. When the density of sea cucumber was 250 g / m3 and the density of Sargassum sp. Was 1000 and 1500 g / m3 , Sea cucumber growth is relatively the best. The specific growth rate (SGR) of Sargassum was the highest when the ginseng density was 750 g / m 3 and the Sargassum density was 500 g / m 3; when the ginseng density was 250 g / m 3 and the Sargassum density was 1500 g / m 3 , While the specific growth rate (SGR) of Sargassum was the lowest. (2) The contents of NH4 + -N, NO2 - N, NO3 - N and PO4 - ). In the absence of Sargassum fusiforme, the concentrations of NH4 + -N, NO2 - N, NO3 - N and PO4 - P in the experimental group were relatively high at 750, 500 and 250 g / m3, In the experiment group, the contents of NH4 + -N, NO2 - N, NO3 - N and PO4 - P in the experimental group were the highest when the density of ginseng was 250 g / m3 and the density of Sargassum cuspidatum was 1000 and 1500 g / The content is relatively low. The results showed that the density of Sargassum fuscus had a very significant effect on promoting the growth of sea cucumber, and at the same time, it had a strong ability to absorb the nutrition factors in the aquaculture water. Under the conditions of this study, the optimal proportion of A. gingivalis was 250 g / m3, the concentration of Sargassum sp. Was 1000 and 1500 g / m3, respectively.