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魚塭結合浮動型太陽光電設施之養殖模式研究

  • 日期:110-08-02
  • 計畫編號:109農科-20.1.1-水-A3
  • 年度:2020
  • 領域:農業綠能多元發展之整合性關鍵技術研發與推動
  • 主持人:張秉宏
  • 研究人員:郭裔培

綠色能源、太陽光電議題受到國際的重視,由於台灣西南沿岸養殖面積寬廣,且日 照充足,適合太陽光電結合養殖的發展,利用養殖面積轉型為漁電共生,未來具有 發展潛力,其中浮動型太陽光電不改變地貌、具有彈性及可變動性,適合漁電共生 發展,然而光電結合傳統的白蝦養殖仍有許多未知須進行研究,本研究模擬光電板 在不同遮蔽率40%及0%,相同的飼養條件下比較池中水質參數之溫度、鹽度、pH值、 DO值、氧化還原電位,白蝦之成長及存活率。本試驗探討金目鱸在養殖池遮蔽率 0 (對照組) 和 40% (試驗組)的成長、水底質和魚片品質的影響。結果顯示:環境因子 隨月別氣候明顯變化,遮蔽率40%處理組水質變動小,微藻穩定不易發生大量死亡 ,養殖過程中白蝦兩處理組的水質因子在安全範圍內。試驗組的成長表現略優於對 照組,7 個月養殖後的末重分別為 609.17 ± 285.13 和 498.07 ± 191.38 公克 ,且試驗組的體長和體重成長回歸線係數與對照組均有顯著差異。根據溫度紀錄 ,在高溫期的日最高溫,試驗組的水溫約較對照組低 2°C,低溫期兩者的水溫差異 不明顯,且養殖期間的試驗組日溫差均小於對照組。對照組的葉綠素 a 濃度在養殖 期間均高於試驗組,且高低變化大,呈現多峰的趨勢。含氮廢物方面,對照組和試 驗組的總氨氮差異不明顯,亞硝酸和硝酸濃度自 7 月開始,試驗組明顯高於對照組 ,但仍在安全濃度範圍內。試驗組的總懸浮固體較對照組高,其餘硬度、總磷、酸 鹼度、溶氧、5 天生化需氧量、生菌數和底土氧化還原電位等指標,兩組差異不明 顯。魚片品質方面,兩組的色差、肉質和感官品評分數無顯著差異。

研究報告摘要(英)


Green energy and photovoltaic issues receive the world's attention. As the southwest coast of Taiwan has a wide culture area and sufficient sunshine, it is applicable to the development of photovoltaic combine aquaculture, and the transformation of this culture area into fishingelectricity symbiosis has development potential in the future. Floating photovoltaic material does not change the landform, it is flexible and variable, and is applicable to fishing-electricity symbiosis development. However, there are still some unknown points in the photovoltaic combine traditional white shrimp culture to be studied. This study simulates photovoltaic panels at shading ratios of 40% and 0%, and compares the pond water quality parameters under the same breeding conditions, such as temperature, salinity, pH, DO value, ORP, as well as the growth and survival rate of white shrimp.This project aimed to investigate the influences of 0 (control group) and 40% (experimental group) covering ratio on Lates calcarifer culture pond, including fish growth performance, water and bottom soil parameters and fish fillet quality. The results show that the environmental factors vary obviously with monthly climate, and the shading ratio 40% treatment group has slight change in water quality and stable microalgae, which is unlikely to induce mass mortality. The water quality factor of the two treatment groups of white shrimp is in the safe range in the culture process.The growth performance of experimental group was slightly better than of control group. After 7 months culture, the final weights of experimental group and control group were 609.17 ± 285.13 and 498.07 ± 191.38 g, respectively. In addition, there was significant difference in both total length and weight regression coefficient. According temperature records, the daily maximum water temperatures of experimental group were 2 degree lower than of control group approximately during high-temperature period. In contrast, the differences of daily maximum water temperatures were not notable during low-temperature period. Moreover, the daily water temperature differences were all lower in experimental group during whole experimental period. The chlorophyll a concentration of control group was higher, and fluctuated with wide variation, which showed multi-peak tendency. In aspect of nitrogenous wastes, control group and experimental group had similar total ammonia nitrogen (TAN) accumulation tendency. In contrast, nitrite and nitrate had been markedly risen in experimental group since July. TAN and nitrite concentration were below the safety concentration in both groups during whole experimental period. Except the total solid was higher in experimental group, there were no notable difference in total phosphorus, pH, dissolved oxygen (DO), 5-day biochemical oxygen demand (BOD5), microbial count and bottom soil oxidation-reduction potential (ORP) between control group and experimental group. In terms of fish fillet quality, we examined the coloration, texture profile and sensory evaluation, and there were no significant difference between control group and experimental group.