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贝类育苗前,要做好以下各项准备工作: 一、整理池底 1.清除池底的淤泥杂物,拣去石块,筛除粗砂,排除浒苔等大型海藻的附着基。 2.育苗前一个月左右,要排干池水,翻耘滩地曝晒10天左右,以起消毒作用。如果底质结构不适宜,要适当加沙或加泥进行改造,以利养殖贝类的栖息。 3.刚挖好的贝池在育苗前要放水浸泡,交换数次,要求pH值稳定在7.2～8.5之间。同时,在积水处用氰化钠或生石灰浸泡消毒,氰化纳用量每亩0.5公斤,生石灰每亩3公斤,以杀除敌害生物。消毒后要进水浸泡2天,换水数次,以免余毒影响贝类幼虫生长。
Shellfish nursery before, to do the following preparations: First, finishing the bottom of the pool 1. Clear the bottom of the mud debris, pick stones to screen coarse sand, excluding Enteromorpha and other large seaweed attachment. 2. About a month before nursery, to drained the water, turning the beaches to exposure 10 days or so, in order to play a disinfection. If the sediment structure is not appropriate, appropriate Gaza or add mud to be modified to facilitate the breeding of shellfish habitat. 3. Just dig a good pool in the nursery before the water soaked, exchanged several times, requiring pH stability between 7.2 ~ 8.5. At the same time, in the water with sodium cyanide or quicklime disinfection, sodium cyanide dosage of 0.5 kg per acre, quicklime 3 kg per acre to kill predators. After disinfection to soak in water for 2 days, changing the water several times, so as to avoid the influence of residual poisonous shellfish larvae growth.