The experimental study on the raft-style polyculture of different densities of abalone( Haliotis discus hannai Ino) and sea cucumber( Apostichopus japonicus Selenka)with kelp( Laminaria japonica)was carried out in Putian city of Fujian prov-ince. The results indicated that:when the stocking density of abalone was 10 individual/box,both the average yield and production value of abalone rearing were the highest;as the stocking density of sea cucumber was 3 head/box,the average yield and production value of sea cucumber rearing were also the highest. The regressive equations describing the relationships between the rearing yield and stocking density of abalone and sea cucumber were constructed;based on these equations,for obtaining the highest rearing yield,the stocking density of abalone and sea cucumber should be 11. 3 individual/box and 3. 4 head/box,respectively.%在福建莆田进行了不同密度皱纹盘鲍和刺参与海带筏式混合养殖的试验研究。结果表明：当皱纹盘鲍的放养密度为10个/箱时，其养殖平均产量和产值均最高；当刺参的放养密度为3头/箱时，其养殖平均产量和产值也最高。以皱纹盘鲍和刺参的养殖产量为指标，建立回归方程，分析结果显示：皱纹盘鲍和刺参的最适放养密度分别为11.3个/箱和3.4头/箱。
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