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文蛤池結合太陽能光電之新養殖模式研發

  • 日期:108-02-12
  • 計畫編號:108農科-25.1.1-水-A1
  • 年度:2019
  • 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:周昱翰
  • 研究人員:周芷儀、陳高松、林益州、楊一男、黃維能、黃大駿

5個0.1公頃的試驗池放養平均體重1.4g的文蛤苗每池10萬粒 (養殖密度為100萬粒 /公頃)進行立柱式太陽能設施之遮蔽率實驗,試驗處理分為遮蔽率0%(S-0)、30%(S30)、40%(S-40)、50%(S-50)及70%(S-70)等5組。經過12個月的飼育試驗結果發現在 5~8月期間之強日照下各試驗池水溫之變化,遮蔽率愈高池水水溫下跌愈多,處理組 的平均水溫比對照組(S-0)要低2.77~3.82℃。各試驗池底土溫度也有相同的趨勢。 由於光電設施設有排水系統,3月至9月因下雨使得各試驗池池水鹽度由30psu逐漸下 降到15 ~ 20psu,有遮蔽池塘(S-30 ~S70)的鹽度比無遮蔽的池塘(S-0)受到雨水的 影響小,與對照組相比池水鹽度會高出3~5psu。光照度紀錄試驗中,照度隨遮避度 減少;水質分析項目包括溫度、COD、BOD、懸浮物、葉綠素a、氨氮、總磷及總氮 ,偶隨遮蔽度增加而有減少的趨勢;此外,磷酸鹽、硝酸鹽及亞硝酸鹽則與遮蔽度 成正比。經組成份分析,不同遮蔽度使得水質變化的主要水體參數為含氮及含磷物 質。浮游藻類共鑑定出矽藻、綠藻、隱藻、裸藻、甲藻和藍綠菌等6門9綱,合計有 27屬68種;底棲藻類則多以矽藻為主,合計18屬58種。藻類組成顯示,浮游藻類組 成以隱藻、綠藻和矽藻為主要的組成,而底層則以矽藻為主。而在養殖期間對照組 (S-0)文蛤的成長均低於有遮蔽的處理組(S-30~S-70),顯示適度的遮蔽可讓文蛤有 較好的成長環境。

研究報告摘要(英)


Five 0.1-hectare test ponds were used to stock 100,000 seedlings with an average body weight of 1.4 g per ponds (the density of breeding was 1 million/ha). The screening rate experiment of the column-type the photoelectric facilities was carried out. The test treatment was divided into a masking rate of 0% (5-groups such as S-0), 30% (S-30), 40% (S-40), 50% (S-50), and 70% (S-70). After 12 months of breeding test results, the change of water temperature in each test under strong sunlight during the period from May to August was observed. The higher the shielding rate, the more the water temperature dropped. The average water temperature of the treatment group was lower than that of the control group (S-0) is 2.77~3.82 °C lower. The soil temperature of each test tank also has the same trend. Due to the drainage system of the photoelectric facilities, the water salinity of each test pool gradually decreased from 30psu to 15 ~ 20psu from March to September, and the salinity of the sheltered ponds (S-30 ~ S-70) are more than that of the unshielded pond (S-0) is less affected by rain. Compared with the control group, the salinity of the pool water will be 3~5psu higher. From August to September, the total ammonia-nitrogen concentration in the pools of each test pool increased abnormally (>0.5ppm), and the deaths of the samples in each test pool occurred to varying degrees. During the culture period, the growth of the control group (S-0) was lower than that of the masked treatment group (S30~S-70), indicating that moderate shading can make clam have a better growth environment.