農業部水產試驗所全球資訊網

本研究利用混合養殖技術建立魚、蝦、貝、藻類循環養殖系統，使用白蝦及虱目魚作為主要經濟養殖物種。牡蠣作為貝類養殖池生物，來過濾水中微細藻類及有機物質，利用龍鬚菜吸收溶解態的營養鹽，此技術可以淨化及穩定水質，同時降低養殖用水排放對環境的衝擊，以及提高水資源的再利用，實驗過程中魚蝦池pH、溫度、鹽度、透明度、溶氧均在適合養殖範圍內，氨氮、亞硝酸氮濃度均在安全濃度以下，葉綠素a濃度隨著養殖時間增加由45增至180 ppb，總懸浮固體濃度由35增加至167 ppm，養殖中期池放養牡蠣並加以循環，使的魚蝦養殖池的葉綠素a最低降至121 ppb，總懸浮固體最低降至80 ppm。牡蠣育肥4週後肥滿度由3.6％增加至6.5％，相較於同時期七股潟湖所飼養的牡蠣肥滿度3.37％有較高的肥滿度。

研究報告摘要(英) The study utilized the technique of polyculture to establish a breed’s ecological system for integrated cultivation of fishes, shrimps, shellfishes and algae, which the major cultured objectives are white shrimp, Peneaus vannamei and milkfish. Oyster, Crassostrea angulata was the major cultivated objective to responsible for absorbing the suspended organic matter, micro-algae and algae, Gracilaria absorbing the dissolving nutrients. The process can stabilize the water quality and meantime decrease destruction of the environment, and it can decrease the environment impact of sewage discharge and improve the recycling of water resources. The values of PH, temperature, salinity, transparency and dissolution oxygen for the ponds of the experiment are within appropriate ranges. Both the values of NH+4-N and NO2-N are under the safe concentration. Besides, the chlorophyll a concentration increased from 45ppb to 180 ppb with cultivating period and suspended organic matter concentration increased from 35ppm to 167ppm. In the middle of cultivating period, the ponds were added oyster, Crassostrea angulata to increase the biological cycle, which caused the chlorophyll a concentration decreased minimum of 121 ppb and suspended organic matter concentration decreased minimum of 80 ppm. The relative fatness of oyster, Crassostrea angulata was increased from 3.6％ to 6.5％ after cultivating for 4 weeks. It compared with the same particular period of cultivating in cigu lagoon that relative fatness of oyster is higher than 3.37％.