施肥是向鱼塘中不断地补充有机的和无机的营养物质,促进饵料生物繁殖生长,供鱼取食;池水中的腐屑可为浮游动物和一些鱼类所食用,一部分经细菌分解转化为营养物质。如此反复循环,使鱼塘天然饵料生物量保持在较高的水平,使鱼类均匀成长。施肥的要领是掌握“四看”即看季节、看水色、看天气、看鱼情。看季节:长江流域气候春温多变,寒潮频繁;夏热期长,气候暑热;秋季凉爽;冬季严寒期短。因此,施肥应“春季慎施,初夏勤施,盛夏稳施,秋凉重 Fertilization is to continuously add organic and inorganic nutrients to the fish ponds to promote the growth of food organisms for feeding; feeding debris in pond water for zooplankton and some fish edible, part of the bacterial decomposition into Nutrients. So repeated cycles, so that fish ponds natural food biomass to maintain a high level, so that fish grow evenly. The essentials of fertilization is to master the “four see” that is to see the season, see aqua, see the weather, see the fish. Look at the season: the Yangtze River Basin climate changeable temperature, cold frequent; long summer heat, climate heat; cool autumn; winter cold period is short. Therefore, fertilization should be "Spring Shen Shi, early summer Qin Shi, summer stable Shi, autumn and cool weight