秋季 ,是养殖河蟹成熟和收获的季节 ,又是河蟹极易死亡的时期。有的养蟹户不注意加强管理 ,常引起河蟹大批死亡 ,因此 ,预防河蟹死亡 ,是提高河蟹成活率的关键之一。应注意以下三个方面 :1　自然死亡俗话说 :“西风起 ,蟹脚痒。”每年 9～ 11月 ,都有一批 2年生的河蟹由“黄蟹 Autumn, is the breeding season of crab breeding and harvest, but also crabs easily died of period. Some crabs do not pay attention to strengthening management and often cause a large number of deaths of crabs. Therefore, preventing the death of crabs is one of the keys to improve the survival rate of crabs. Should pay attention to the following three aspects: 1 natural death As the saying goes: “the westerly, crab itch.” Every year from September to November, there are a group of 2-year-old crab by the "crab