摘要
在地势低洼的芦滩上围堤蓄水 ,面积约 6.4 8hm2 ,水深 0 .8～ 1 m。以草鱼 ( 456g/尾 )、团头鲂 ( 1 1 5g/尾 )为主体鱼 ,每公顷共放养鱼种 974 5尾。以菜仔饼为主要饲料 ,6～ 9月每月追肥 1～ 2次过磷酸钙 ( [PO3- 4 ]1 .57～ 0 .94mg/( L·次 ) )和碳酸氢铵 ( [NH+ 4 ]1 .4 3～ 0 .58mg/( L·次 ) ) ,同时持续注水。饲养约 1 0个月 ,每公顷产鱼约 4 0 68kg,产投比 1 .
The water coverage of the pond built in the lower reed marshes was about 6.48 hm 2, water level 0.8~1 m. With the pattern of semi care and main mixing of Megalobrama amblyocephala and Ctenopharyngodon idellus, 9 745 fish fry were cultured per hm 2 in the pond and fed mainly with mixed feed within 10 months, and in June to September, the water quality was controlled by fertilizing Ca(H 2PO 4) 2 ([PO 3- 4] 1.57~0.94 mg/L) and NH 4HCO 3 ([NH + 4] 1.43~0.58 mg/L) once or twice a month and continuous repenishing water.The result showed that 4 068 kg fish was harvested per hm 2, and the ratio of output to investment was 1.66.
