1.保持蟹池水体有充足的溶氧。河蟹生长季节,要保持水体溶氧在5mg/L以上,透明度40—50cm,每5—7天换注一次新水,每半月使用一次生石灰。当发现有少量河蟹上岸,口吐白沫,便说明池中水体已缺氧,要及时换水。2.投饵要均匀。要求做到:①要坚持“四看”、“四定”投饵为原则;②饵料要充足,日投饵 1. Crab pool water to maintain adequate oxygen. Crabs growing season, to maintain dissolved oxygen in water above 5mg / L, transparency 40-50cm, every 5-7 days a new injection of water, once every two months using quicklime. When a small amount of crabs were found ashore, foaming at the mouth, it shows that the pool of water has been hypoxia, to change the water in time. 2 feeding should be uniform. Required to do: ① to adhere to the “four see”, “four” bait principle; ② adequate feed, the day feeding