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我们于1995年4月在宁波市江北区洪塘镇水产养殖场进行了网箱培育幼蟹的试验。结果证明:利用网箱培育幼蟹具有水体溶氧高,蟹苗成活好,生长迅速。幼蟹规格齐。管理捕捞方便等优点。现将试验情况简述如下: —、材料和方法: 1.网箱设置地点的选择:我们将网箱设置在面积为6.40亩,池深2m,背风向阳的池边上,底为坚硬沙性土质,水质清新无污染,PH值为7.1,周围比较安静。 网箱用60目聚乙烯网布制成,面积为10m~2/只,共4只.放置箱距4～5m,成一条直线。网箱上面用盖网半封死,留一边作为观察,投喂饲料。在设置网箱时,四角
In April 1995, we conducted cages to cultivate crabs in Hongtang Aquaculture Farm, Jiangbei District, Ningbo City. The results show that: the use of cages to cultivate juvenile crabs have high dissolved oxygen in water, crab seedlings survive well, grow rapidly. Crab specifications Qi. Management advantages such as easy fishing. Now the experimental conditions are briefly described as follows: -, Materials and Methods: 1. Selection of Site for Cage Set-up: We set the cage on an area of 6.40 mu with a pool depth of 2m and a leeward sunny pool edge with hard sand Soil quality, fresh water pollution-free, PH value of 7.1, the surrounding quiet. Cages made of 60 mesh polyethylene mesh cloth, an area of 10m ~ 2 / only, a total of 4. Place the box from 4 ~ 5m, into a straight line. Cages above the net cover with a net cover, leaving aside as observation, feeding feed. When setting up the cage, the four corners