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北方地区池塘养成鱼的特点是集中秋捕上市,因此容易造成秋季淡水商品鱼销售难,甚至发生压塘现象,不但直接影响
The fish in the ponds in the northern area are characterized by a concentrated autumn catch market, which is likely to result in the difficulty in selling freshwater fish commodities in the fall and even the phenomenon of pressure ponds, which not only directly affects