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刺参育苗近几年发展很快,但稚参阶段成活率普遍不高,更有不少场家疏于管理,导致稚参患病甚至全军覆没。现总结出稚参培育阶段的一些技术要点,供借鉴。1及时疏苗和倒池 每年5~8月份是刺参育苗旺季,此期水温高,刺参浮游幼体在投板变态后,除一些有条件的场家提前培育部分底栖硅藻供稚参摄食外,大多数育苗场均要马上投喂配合饵料、鼠尾藻磨碎液、“腐泥”等。从目前育苗情况看,变态稚参密度一般在5万~15万头／m3。大量的稚参不断生长,其排泄物也日益增多,决定了附着后的稚参在原附着基上的培育时间最长不应超过1个月,特别是晚茬苗正值高水温期,残饵和排泄物更易腐败变质,投板后20天左右即应疏苗倒池。
Stichopus japonicus nursery developed rapidly in recent years, but the survival rate of juvenile ginseng stage is generally not high, more than a lot of field neglect management, resulting in juvenile sick or even annihilated. Now summarize some of the technical points of juvenile ginseng cultivation stage, for reference. 1 sparse sprouting and pouring pond in a timely manner 5 to August each year is the season of prickly heat, the water temperature is high at this period, the sea cucumber larvae after the metamorphosis, in addition to some conditional field early to cultivate some benthic diatoms for juveniles Feeding, most nurseries should be fed with bait, Sargassum grinding liquid, “sapropel” and so on. From the current situation of nursery, metamorphosis of the density of juvenile ginseng generally 50,000 to 150,000 / m3. A large number of juvenile ginseng constantly growing, and its excreta are also increasing, decided to attach the juvenile ginseng in the original attachment of the longest incubation time should not exceed 1 month, especially late crop seedlings at high water temperature period, bait And excrement more perishable deterioration, about 20 days after the vote should sparse seedlings pour pool.