水田施撒苦茶粕對泥鰍之影響評估

Assessment of Tea Seed Meal Impacting on Loach in Paddy Field

陳榮松(Rong-Song Chen) ； 吳嘉盈(Chia-Ying Wu)

《興大工程學刊》 21卷1期 (2010/03) Pp. 1-10

https://doi.org/10.6287/JENCHU.2010.2101.01

摘要

在台灣，爲了防治福壽螺，無論有機農業或慣行農法皆於插秧期間在水田內施撒苦茶粕來抑制福壽螺生長。但是苦茶粕除了可抑制蟲害外，亦會撲殺具有黏液的軟體動物，引起水田所謂的生態浩劫。目前國內雖然有探討苦茶子內之皂素濃度對福壽螺之毒性等問題，但並未針對魚類探討。故本研究以香莢蘭醛－硫酸法及泥鰍田間生存試驗兩種方式，試圖找出苦茶粕對泥鰍之危害效期。由其結果可知，插秧後可封田施撒苦茶粕，並在夏季（二期作）兩天、春季（一期作）三天後再行引水灌溉對抑制福壽螺效果較佳。另建議施撒苦茶粕後以不排水為原則，以降低水路泥鰍危害的機率。此外，從現地實驗中可發現夏季的高水溫對水田及農水路之泥鰍亦有不良的影響。

關鍵字

農水路 ； 苦茶粕 ； 皂素 ； 泥鰍

並列摘要

The farmers often strew tea seed meal during transplantation of rice seedlings in the paddy field to reduce the harm caused by Pomacea canaliculata. However, tea seed meal would endanger the other creatures in the paddy field. Therefore, this study intended to utilize Vanillin-sulfuric acid and loach (Misgurnus anguillicaudatus) to find out the duration of harm caused by tea seed meal and the solution to reduce the harm. It is suggested to block the outlet of the farmland and strew the tea seed meal after transplanting rice seedlings. Moreover, it is also recommended to irrigate the paddy field after two days in summer (the first crops) and three days in spring (the second crops). It's not recommended to drain water, so as to reduce the harm to creatures. Besides, the high water temperature in summer also has negative influence over the paddy field and creatures.

並列關鍵字

agricultural canal ； tea seed meal ； Saponin ； loach