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回字形池塘是集种、养于一体的高产高效生产模式,能较好地解决鱼的青、精饲料,挖掘渔业生产潜力。提高经济效益。一般每亩回字形鱼池年均可产商品鱼500公斤。一、开挖鱼塘回字形池塘由池埂、鱼沟和平台三部分组成,所占面积各为三分之一。池埂在外围,鱼沟居中,平台在内。鱼沟底距平台2米,平台比池埂低2.5米,有效水深4米左右。结合挖沟,将挖出来的土做池埂,平台整平成田,可种稻、麦等精饲料。二、投放鱼种回字形池塘的鱼沟深,池埂高,蓄水量大,并自身生产青、精饲料.可投放多规格、多层次、多品种的优质鱼
The zigzag-shaped pond is a kind of high-yield and high-efficient production mode that integrates planting and raising. It can solve the green and refined feed of fish well and tap the potential of fishery production. Improve economic efficiency. Generally speaking, the average annual output of muscovite fish tank can produce 500 kilograms of fish. First, the excavation of fish ponds back-shaped pond by the ponds, fish ditch and platform composed of three parts, accounting for one third of the area. Pond 埂 in the periphery, fish ditch center, platform included. Fish ditch bottom platform 2 meters, 2.5 meters lower than the pond Chi platform, the effective depth of about 4 meters. Combined with digging ditches, dig out the soil to do pool 埂, platform leveling Narita, can be rice, wheat and other fine feed. Second, put the fish back to the shape of the pond fish ditch deep, pool 埂 high, water storage capacity, and its own production of green, refined feed. Can put multi-standard, multi-level,