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河鳗是水产养殖的优良品种。但水温的高低与河鳗生长成正比关系,水温越高(指相对高),生长越快,反之则慢。最适水温为24—28℃,低于10℃就停止摄食,高于30℃则食欲下降。因此通过温室来控制最佳水温,使河鳗在短期内快速生长。国外早年已从事此项工作,近年来,我国沿海各省也相继采用,并注意了因地制宜降低消耗,利用简易温室或塑料大棚,以锅炉加热或利用温泉水、深井水、工厂余热水等在低温季节来提高水温,以缩短养鳗周期,提高经济效益。
River eel is an excellent species of aquaculture. However, the level of water temperature and the growth of the river eel is proportional to the relationship between the higher the water temperature (referring to relatively high), the faster growth, otherwise slow. The most suitable water temperature is 24-28 ℃, less than 10 ℃ to stop feeding, above 30 ℃ the appetite decreased. Therefore, through the greenhouse to control the optimal water temperature, so that river eels in the short term rapid growth. In the early years, foreign countries have already engaged in this work. In recent years, the coastal provinces of our country have also adopted one after another and paid attention to reducing consumption according to local conditions, using simple greenhouses or plastic sheds, heating or utilizing hot spring water, deep well water, Season to raise the water temperature, in order to shorten the eel cycle, improve economic efficiency.