张家山水库化肥养鱼增产试验

A Expeximent of Fish Culture of Chemical Fertilizer for High Yield in Zhang Jiashan Reservior

张家山水库位于湖北江陵境北，面积２１６．７ｈｍ￣２，水深２．５～３．０ｍ，是一中型贫营养型水库。通过实施化肥养鱼，产量由１９９２年的１１０．０ｋｇ／ｈｍ￣２提高到１９９３年的２１３．０ｋｇ／ｈｍ￣２，鲢鳙的上市规格分别由１９９２年的０．５ｋｇ／尾、１．５ｋｇ／尾提高到１９９３年的０．８ｋｇ／尾、２．５ｋｇ／尾，取得了高产试验的成功。

Zhang Jiashan Reservoir,located north of Jiangling County of Hubei Province,tas a watcrfaceabout 246.7 hm￣2 wilh average water depth from 2.5 to 3.0 metre. It is a lack-feed midium-sized reservoir.Aexperiment of fish culture of cbemical fertilizer was conducted,its fish yidld increased from 110.0 kg per hm￣2 in1992 to 213.0 kg per hm￣2 in 1993.The size of silver carp was raised from 0.8kg in 1992 to 2.5kg in 1993.andbigheadfrom 1. 5 kg to 2.5kg,the cxporiment was turned out to be a successful one.