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1.自养鱼种.鱼种的开支数额是比较大的,以亩投鱼种50公斤为例,需人民币300元.如果自己培育鱼种,这笔开支就可以减少.怎样培育鱼种?一是划出专门水面养鱼种;二是夏、秋季在成鱼中套养鱼种.2.科学搭配.目前不少水域养殖品种单一,搭配不科学,水域资源没能充分利用,鱼产量不高,使成本加大.因而应按照鱼类的生物链,合理利用饲、饵、肥,充分发挥水体生产潜力.如草、鲢鱼以草为主,处于食物链
1. Self-breeding fish species. The cost of fish species is relatively large, with 50 kg per mu species of fish for example, need 300 yuan .If you cultivate fish species, the expenses can be reduced .How to cultivate fish species? First, draw a special surface water fish species; Second, the summer and autumn in the adult fish species .2 scientific matching.At present, many aquaculture species single, with unscientific, water resources can not make full use of fish production Not high, so that the cost increases.Therefore, should be in accordance with the biological chain of fish, rational use of feed, bait, fertilizer, give full play to the potential of water production.As grass, silver carp mainly grass, in the food chain