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1999-2000年在开封市郊区渔场15亩鱼塘进行了池塘主养团头鲂试验,亩产商品鱼750千克,其中团头鲂500千克,亩利润达6200元,投入产出地1:1.82。
In 1999-2000, 15 mu of fish ponds in the fishing grounds of Kaifeng City were used for the test of pond head pigs. The output of each group was 750 kg per mu, including 500 kg per mu, and the profit per mu reached 6,200 yuan. The input-output area was 1: 1.82 .