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目前,河蟹人工养殖生产已在我省遍布开来,各家各户精心饲养伴随着农田管理,紧张地进行着。全省幼蟹养殖生产形势总体喜人,可望丰收。但是,近日来部分地区也相继出现了一些病情,造成了一定的损失。经不完全调查,仅盘锦地区就有几千亩蟹苗暂养池轻重不同地发生了病害。暂养时间仅十余天,轻的死蟹一半以上,重者几乎所剩无几。发病蟹池表现症状基本一致,大都在五月中下旬购苗入池,多数在第一次变态成仔蟹以后,爬到池边陆续死亡,少数已二次脱壳之后掉头,人工驱赶不愿下水,池边局部折苗成堆。
At present, the crab artificial breeding production has been spread throughout our province, every household carefully feeding along with the farmland management, carried out nervously. The overall situation of juvenile crab breeding in the province is generally gratifying and it is expected that harvest will be achieved. However, in recent days some conditions have also appeared successively in some areas, causing some losses. After an incomplete investigation, only Panjin region has several thousand acres of crab seedling ponds have different severity of the disease. Holding time only ten days, more than half of light crabs, heavy ones almost nothing left. Crab pool disease symptoms are basically the same, mostly in mid-late May buy seedlings into the pool, most of the first metamorphosis into crabs, climbed to the pool after another death, a few have been twice after shelling U-turn, reluctant to manually repel Sewage, the pool edge of the seedlings piled up.