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一般养鱼周期,花白鲢、鲤鱼、鲫鱼、鳊鱼需要2年时间,草鱼、青鱼需要2年～3年,生长周期长,饵料效率低,生产环节多,管理费用大,饲养成本高,经济效益差,若采取综合措施,即可缩短养鱼周期,将鱼苗当年养成净食用鱼,花白鲢、鲤鱼、草鱼、青鱼养成500g以上,鲫鱼、团头鲂、罗非鱼250g左右,亩净产400kg～500kg,高的可达800kg以上,经济效益极为可观。缩短养鱼周期的综合措施有以下几点: 一、施足基肥。夏花鱼种放养10天
The general fish farming cycle, silver carp, carp, crucian carp, mackerel need 2 years, grass carp, herring need 2 years to 3 years, long growth cycle, low efficiency of food production, many production processes, high management costs, high cost of farming, economy The benefits are poor. If comprehensive measures can be taken to shorten the period of fish farming, the fish fry will develop the net food fish, silver carp, carp, grass carp and black carp more than 500g, crucian carp, bream, tilapia 250g Net production 400kg ~ 500kg, high up to 800kg above, the economic benefits are extremely impressive. Comprehensive measures to shorten the period of fish culture are the following: First, Shi enough base fertilizer. Summer fish stocking 10 days