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近几年,笔者在千亩湖荡养蟹试验和生产实践中,对一龄幼蟹养殖技术,提高成蟹回捕率,增加河蟹养殖产量等方面做了些工作,现总结介绍如下; 1.养蟹水域的选择与防逃设施养蟹水域应选择水质清晰、无污染、底栖生物丰富、水草较多、能保持一定水位的浅水封闭湖荡,荡埂宜宽,面积以千亩以内为好。为防止河蟹逃逸,水域四周应设置防逃墙,防逃墙材料可选择石棉瓦,防逃墙应高出荡埂60厘米,埋入埂下20厘米。 2.蟹种和鱼种的放养湖荡养蟹要获高产,蟹种放养可选择每
In recent years, the author in the mu acres of crab experiment and production practice, the first-instar crab farming techniques to improve the rate of return of crabs and increase production of crabs and other work done some work, are summarized below; 1 Choice of crab waters and anti-escaping facilities Crab waters should choose a clear water quality, pollution-free, rich in benthic organisms, more water plants, to maintain a certain water level of shallow water closed lake swing, swing 埂 should be wide, with an area of less than acres As well In order to prevent crabs from escaping, anti-fleeing walls should be provided around the water area, asbestos tiles can be selected as anti-fleeing wall materials, anti-evasion walls should be 60cm above the surface and 20cm below the ground. 2. Crab species and stocking stocking lake Drain crabs to be high yield, crab species stocking can choose each