捕捞。蟹苗具有集群、对淡水特别敏感、喜淡水生活和有趋岸性等习性,因此在蟹苗汛期随潮水向淡水逆流,集中在沿江或沿海的水闸附近,或有淡水入海的下水道、涵洞口处。蟹苗汛期捕捞时间与每天潮汐周期有着密切的关系,蟹苗的捕捞时间是在每 Fishing. Crabs are clustered and are particularly sensitive to freshwater, freshwater life and amenable to other habitats. Therefore, in the flood season of crabs, they flow countercurrently to tidal water, concentrated near sluices along the river or along the coast, or from sewers with freshwater into the sea and culverts Department. Crab fishing season fishing time and tidal cycle have a close relationship, crab fishing time is