养鱼户种植牧草,可以降低养鱼成本,提高经济效益。据测算,用野杂草喂鱼,平均每20～30千克可长肥鱼1千克;用优质牧草平均每10～15千克可长1千克鱼。用牧草喂667平方米鱼,每年可节约精料3000～3500千克,节本3500～4000元。再者,用牧草养鱼可减轻鱼病,使鱼药的用量减 Farming of fodder farmers, can reduce the cost of fish farming, improve economic efficiency. It is estimated that the use of wild weed feeding fish, an average of 20 to 30 kg per kilogram of fat fish; with an average of every 10 to 15 kg of high quality forage can grow 1 kg of fish. Feeding 667 square meters of forage with forage, annual savings of 3000 to 3500 kg concentrate, section of 3500 to 4,000 yuan. Furthermore, fish farming with forage can reduce fish disease and reduce the amount of fish medicine