微流水池塘主养长吻鮠高产试验

High Yield Trial of Leiocassis longirostris is Main Raised in Micro-running Water Pond

用配合饲料在微流水池塘主养长吻鮠（Leiocassis longirostris），以适当的养殖密度、合理增氧、科学管理和防病治病，经过330d的试验，单产13542kg／hm2，利润72850元L／hm2，饵料系数1．93。结果表明，长吻鮠的生长水温为15～32℃，最适宜生长水温22～28℃；鱼种放养规格在70～240g／尾时生长较快，400g／尾以上时，生长速度明显下降。水温在25—28℃且规格小于240g／尾时，饵料系数较低；水温低于22℃和高于28℃时以及规格大于240g／尾时饵料系数偏高。在微流水池塘条件下，用配合饲料养殖长吻鮠能够取得较好的经济效益。

This paper introduces the use of mixed-feed raise Leiocassis longirostris in the micro running water pond. After 330 days trial, per-hectare yields 13 542 kg, profit is 72 850 Yuan and the fish food Coefficient is 1.93. The results show that the water temperature between 15℃ and 32℃ is fit for the Leiocassis longirostris growth and the best temperature was between 22℃ and 28℃ ; the Leiocassis longirostris Specification between 70 g and 240 g grows quickly, the speed of grow drops obviously when the Leiocassis longirostris is heavier than 400 g ; the fish food Coef- ficient is low when the water temperature is between 25℃ and 28℃ and the specification is lighter than 240 g; and the fish food Coefficient is high when the water temperature is lower than 22℃ or higher than 28℃ and the specification is heavier than 240 g. Under the conditions of the micro running water pond, the better economic and social benefits can be obtained by raising Leiocassis longirostris with mixed-feed.