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一、试验基本情况塘沽区对虾养殖试验工作从79年开始,今年是三年试验的最后一年,试验期间,在有关部门支持下,试验效果不断提高,较顺利完成了试验任务。79年试养面积20亩,投放自然苗,收获对虾1704.5斤,平均亩产85.2斤,虾体质量8～10公分40％,8公分以下60％,平均一斤80尾左右。80年扩大面积120亩,投苗200万尾,其中自育苗120万尾,自然苗80万尾。收获对虾2147斤,平均亩产18斤平均一斤70尾左右。81年面积120亩,投苗115万尾,平均每亩投苗约一万尾,全是自育苗。收获对虾13923斤,平均亩产116斤,最高池亩产369.73斤。虾体质量10-15公分,占48％,10分以下占52％。二、实验条件与方法:
First, the basic situation of the experiment Tanggu shrimp farming test from 79 years, this year is the last year of three years of testing, during the test, with the support of relevant departments, the test results continue to improve, more smoothly completed the test task. 79 years trial area of 20 acres, put natural seedlings, harvest shrimp 1704.5 kg, average yield 85.2 kg, shrimp body mass 8 to 10 cm 40%, 8 cm below 60%, an average of about 80 pound. 80 years to expand the area of 120 acres, 2 million seedlings vote, of which 1.2 million since the nursery stock, 800,000 natural seedlings. 2147 pounds of shrimp harvest, the average yield of 18 pounds an average of about 70 pound. 81 years, an area of 120 mu, 1.15 million voted seedlings, the average investment seedlings per mu about ten thousand, all from the nursery. 13923 pounds of shrimp harvest, the average yield 116 pounds, the highest pool 369.73 kg per mu. Shrimp body mass 10-15 cm, accounting for 48%, 10 points or less accounted for 52%. Second, the experimental conditions and methods: