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随着对虾养殖事业的迅速发展,种苗的需要量也越来越大。目前我国已经有若干单位正式开始供应虾苗,很多地方也已经做到苗种自给。据统计,目前全国虾苗年产量已经接近4000万尾,然而对于更大规模地开展对虾养殖来说,上述供应数量仍远感不足。原因还是由于幼虫的成活率较低,出苗数量不大。此外,对产卵亲虾的利用也不充分,目前提高对虾出苗率的问题已经成了各地养殖单位日益关切的大事。几年来我们在对虾
With the rapid development of shrimp farming, the demand for seedlings is also growing. At present, a number of units in our country have officially started to supply shrimp and seedlings, and in many places they have also achieved self-sufficiency. According to statistics, at present, the annual output of shrimp and shrimp is close to 40 million at the whole country. However, for more large-scale shrimp farming, the above supply is still far from enough. The reason is due to the lower survival rate of larvae, the emergence of a small number. In addition, the utilization of spawning broodstock is also inadequate. At present, the issue of raising the emergence rate of shrimp has become a major concern of farms all over the world. We have been shrimp for years