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1989年,我们在渔业大队两口总面积8.2亩,平均水深1.2米的池塘里进行鱼、蟹混养试验。经一年的努力,平均亩产鲜鱼316公斤、商品蟹14.5公斤,亩产值1637.17元,亩利润691.30元,取得了较高的经济效益。1990年,我们把鱼蟹混养生产模式发展到1306亩,截止10月月底,已收获商品蟹1.23万公斤,平均亩产9.5公斤,增加产值28.8万元,获利21.5万元。现将1989年试养情况综述如下。一、池塘条件试验池为南北向、长方形,土质黄夹沙,塘底锅
In 1989, we conducted a fish and crab polyculture experiment in a pond with a total area of 8.2 mu and an average water depth of 1.2 m. After a year of hard work, the average output per mu of fresh fish 316 kilograms, crab 14.5 kilograms, 1637.17 yuan per mu, profit of 691.30 yuan, and achieved high economic benefits. In 1990, we developed a production model of fish and crab polyculture to 1306 mu. As of the end of October, we have harvested 12,300 kilograms of commercial crabs and an average of 9.5 kilos per mu, an increase of 288,000 yuan in output value and a profit of 215,000 yuan. The trial status of 1989 is summarized below. First, the pond conditions Test pool for the north-south, rectangular, yellow soil sand, pond bottom pot