论文部分内容阅读
池蟹后期(8～10月)管理水平的优劣,对提高商品蟹的产品、质量,增加养殖效益,有着举足轻重的影响。根据水温变化和池蟹生长摄食情况,池蟹后期管理应注重以下几个环节。一、水质调节河蟹喜在微碱性水中生活,池水的pH值在7.9～8.5之间,调节的一个有效方法是定期施用生石灰。一般每半月施一次生石灰,每次每亩15～20公斤,化浆均匀泼洒全池。这样既可调节池水pH值,改良水质,又可增加池水钙的含量,促进蟹脱壳。
Crab crab late (8 to October) the merits of the management level, to improve the product crabs, quality, increase breeding efficiency, has a decisive influence. According to changes in water temperature and the growth of food consumption of crabs, crabs late management should focus on the following aspects. First, the water quality regulation Crab hi slightly alkaline water life, the pH of the pool water between 7.9 to 8.5, an effective method of regulation is the regular application of quicklime. Generally, a quick lime is applied once every half month, 15-20 kg per acre, and the whole pool is evenly splashed into the pool. This can not only adjust the pH value of the water, improve water quality, but also increase the calcium content of the water to promote crab shelling.