“回字形”池塘种养十分方便。能较好地解决鱼的青、精饲料,是当前有效提高养鱼单产和效益的一种节粮新模式,亩出鱼可稳定在500千克以上。收益大大高于普通池塘。1、开挖池塘。回字形池塘由池埂、鱼沟和平台三部分组成,所占面积各为1/3。池埂建筑在外围,鱼沟居中,平台在内。鱼沟的宽窄按开挖面积而定,沟底距平台2米,平台比池埂 “Back-shaped” pond planting and breeding is very convenient. It can better solve the green and refined feed of fish, and is a new grain saving mode that can effectively improve the yield and profit of fish farming. Mu fish can be stabilized at 500 kilograms or more. Revenue is much higher than ordinary ponds. 1, excavation ponds. The back-shaped pond is composed of three ponds, a fish ditch and a platform, each occupying 1/3 of the area. Pool 埂 building in the periphery, fish ditch center, platform included. The width of the fish ditch according to the excavation area may be, the bottom of the ditch 2 meters away from the platform, the platform pool Chi