蟹苗由于取食能力弱、食性范围狭、对栖息环境要求高、抵抗敌害的能力差,因此,在放入池塘饲养前,需把蟹苗放在较小的水体中培育20天左右,待蜕壳3—4次,(4000—5000只/公斤)时,再放到塘中饲养,这样蟹苗的成活率就会大大提高。下面介绍二种培育方法。一、水泥池培育幼蟹水泥池面积以20—30平方米为宜。水深在蟹苗 Because of its low feeding capacity, narrow feeding range, high requirements on habitat and poor resistance to predatory enemies, the crab must be incubated in a small body of water for about 20 days before being put into a pond. To be shell 3-4 times, (4000-5000 / kg), and then put in the pond feeding, so that the survival rate of crabs will be greatly increased. Here are two ways to cultivate. First, the cement ponds to nurture larval cement pool area of ​​20-30 square meters is appropriate. Water depth in the crab