河北丰南水产养殖场于1998年利用8亩水面搞河蟹人工养殖,共投放大眼幼体40万只。经过154天的饲养,共收获1030kg 扣蟹,平均亩产128.75kg,大的个体68g,平均个体10.5g;总收入41200元,亩效益3149元。现将初步试验情况报告如下:一、试验池及蟹苗投放1.试验池:普通池塘2口,每口池塘4亩,平均水深1.5m,底泥厚20cm,用水泵排注水。每口池塘外围有防逃设施。池塘边长有 Fengnan aquaculture farm in Hebei Province in 1998 using 8 mu of water to engage in artificial breeding of crabs, a total of 400,000 large-eyed larvae. After 154 days of rearing, a total of 1030kg buckle crabs were harvested, with an average yield of 128.75kg per mu and a large individual of 68g with an average of 10.5g. The total income was 41,200 yuan, with the benefit of 3,149 yuan per mu. Now the preliminary test report is as follows: First, the test ponds and crabs put 1. Test pool: 2 ordinary ponds, each pond 4 acres, the average depth of 1.5m, the bottom mud thickness 20cm, water pump. Per pond there is anti-escaping facilities. There are long ponds