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池养河蟹,由于受到环境条件的限制,加之管理不善,很容易死亡。其主要原因有以下五种情况。 1.蟹池缺氧:河蟹喜欢生活在水质清爽、溶氧充裕且有一定微流水的环境中。若水中溶氧低于2毫克/升时就会引起死亡。由于一般养蟹池的深度相对较浅,大多数为1～1.5米,池中还留有浅滩供河蟹栖息活动之用,实际塘中贮水量不多,水质又不很稳定,而投喂河蟹的饲料动物性品种多,效量较大,河蟹吃剩的残饵及排泄物在水中分解发酵。
Catch crab pool, due to environmental conditions, coupled with poor management, it is easy to die. The main reason for the following five situations. 1. Crab pool hypoxia: crabs like to live in water quality fresh, plenty of oxygen and have some microfluidic environment. If the dissolved oxygen in water is less than 2 mg / L will cause death. As the depth of the general crab pool is relatively shallow, most of 1 to 1.5 meters, there are still pools in the creek for habitat activities, the actual pond water storage is not much, the water quality is not very stable, and fed crabs Animal feed animal species and more effective, crab leftover bait and waste decomposition in the water fermentation.