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要养成规格较大的梭子蟹,除抓好投饵、换水等日常管理外,延长生长期也是一项重要措施,这就要求尽可能的早放苗。前几年山东地区多利用海捕抱卵蟹育苗,出苗多在5月下旬～6月上旬。近几年由于春季水温较高,如果能提前到4月底或5月上旬放苗,其生长期可延长15～30天。于是我们对秋季捕捞的梭子蟹进行了大棚越冬培育并获得成功。现将试验情况报告如下。1 场地选择 选择地下卤水丰富、淡水资源好并且背风的地方,建造大棚。2大棚构造 大棚为砖墙,塑料薄膜棚顶,构造和蔬菜大棚相似。
To develop a larger size of the shuttle crab, in addition to catch good feed, water and other daily management, the extension of growth is an important measure, which requires as early as possible Fangmiao. A few years ago, more than the use of sea catch Shandong crab nursery hatchlings, emergence and more in late May ~ early June. In recent years due to the higher water temperature in spring, if you can advance to the end of April or early May Fangmiao, the growth period can be extended 15 to 30 days. So we shuttled the autumn fishing crab over winter cultivation and success. Now the test report is as follows. 1 choice of site We choose underground brine abundant, fresh water resources are good and lee place and build greenhouses. 2 greenhouses tectonic sheds for the brick wall, plastic film roof, structure and greenhouse similar.