1990年唐海县九农场八里滩养殖场千亩虾池,采取了一次放苗两次出虾的作法,取得了较好的经济效益:平均亩产213kg,亩效益1310多元,人均收入13000多元。从9月10日至13日,利用4天时间,共疏虾46000多kg,平均亩疏46.6kg,占总产的21.8％;亩疏3840多尾,约占存苗量的27％。疏出规格公斤均82尾。平均售价13.24元/kg,亩收入超615元。实践表明,一次放苗两次出虾有以下优点: 1.后期可减少各池的负荷量,也就是相 In 1990, Tanghai County, nine farms Bali Beach farms acres of shrimp ponds, took a shrimp twice a year practice of shrimp, and achieved good economic benefits: an average yield of 213kg, acres of benefits more than 1310 yuan, more than 13,000 yuan per capita income . From September 10 to 13, the use of 4 days, a total of more than 46,000 kg Shushan shrimp, the average mu Shu 46.6kg, accounting for 21.8% of the total output; Mu Shu 3840 more than tail, accounting for 27% of the amount of seedlings. Drain specifications kg are 82. The average selling price of 13.24 yuan / kg, overmunshine income of 615 yuan. Practice shows that twice a shrimp release Fang has the following advantages: 1 late to reduce the load of each pool, that is, phase