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种草养鱼是降低养鱼成本，提高经济效益的有效途径。 一、养殖结构 种草养鱼的养殖结构应以草食性鱼类为主，同时考虑到水体和饲料的充分利用，合理搭配杂食和滤食性鱼类。实践证明，草食性鱼类的放养量占总放养量的 60％～ 65％，比较合理，这样总产量中草食性鱼类产量
Planting fish grass is to reduce the cost of fish farming, improve economic efficiency of the effective way. First, aquaculture structure Breeding fish farming structure should be dominated by herbivorous fish, taking into account the full use of water and feed, reasonable with omnivorous and filter feeding fish. Practice has proved that the stocking of herbivorous fish accounted for 60% to 65% of the total stocking, more reasonable, so that the total output of herbivorous fish