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于2005～2006年在天津市天祥水产有限责任公司养殖基地,采用循环节水和池塘覆膜生态养殖技术,在覆膜试验区和土池对照区中进行了凡纳滨对虾(Litopenaeus vannamei)养殖技术研究和水质监测。结果表明:2005年、2006年覆膜试验区的放养密度均为97.5万尾/hm~2,产量分别为13700kg/hm~2、16500kg/hm~2;土池对照区的放养密度分别为60万尾/hm~3、30万尾/hm~2,产量分别为7800kg/hm~2、5250kg/hm~2。覆膜试验区在虾类密度较大的情况下,水质一直良好,溶氧的平均值、最低值均高于土池对照区,平均水温比土池对照区高1℃～2℃,水质理化指标覆膜试验区与土池对照区没有显著差异,浮游植物年均生物量分别为110.03mg/L、97.36mg/L,浮游动物年均生物量分别为61.45mg/L、53.80mg/L;土池对照区浮游植物年均生物量分别为48.20mg/L、43.16mg/L,浮游动物年均生物量分别为36.48mg/L、57.34mg/L。池水流经循环系统处理后得到改善,整个养殖期间不需外部补水。
In 2005-2006, Tianjin Tianxiang aquaculture limited liability company breeding base, the use of water-saving and pond-covered aquaculture technology, in the film-covered areas and soil pond control area Litopenaeus vannamei culture Technical research and water quality monitoring. The results showed that the stocking densities of the film covered areas in 2005 and 2006 were all 975,000 / hm ~ 2 and the yields were 13700kg / hm ~ 2 and 16500kg / hm ~ 2, respectively. The stocking densities in the control area of soil pools were 600,000 Tail / hm ~ 3,30 million / hm ~ 2, the output was 7800kg / hm ~ 2,5250kg / hm ~ 2. Under the condition of larger density of shrimp, the water quality of the film-coated area has been good, and the average value and the lowest value of dissolved oxygen are all higher than those in the control area of the soil pool. The average water temperature is 1 ℃ ~ 2 ℃ higher than that in the soil pool. The average biomass of phytoplankton was 110.03mg / L and 97.36mg / L, respectively, and the average annual biomass of zooplankton was 61.45mg / L and 53.80mg / L respectively. The soil pool control area The average biomass of phytoplankton was 48.20 mg / L and 43.16 mg / L respectively, and the annual biomass of zooplankton was 36.48 mg / L and 57.34 mg / L, respectively. The flow of water through the circulation system is improved after treatment without the need for external replenishment throughout the aquaculture.