草鱼体长5厘米时开始吃草,250克以上的草鱼每天食草量可达体重的50～70%。为促使草鱼快长,投草时须掌握以下方法: 一、草鱼喜吃平行脉的长叶青嫩草,厌食网状脉的圆叶草料,应种植黑麦草、苏丹草和采集野生的长叶嫩草投喂。二、投喂陆生青草为主。陆生青草15公斤可长1公斤鱼肉;水生草60～80公斤才长1公斤鱼肉。 Grass carp body length of 5 cm began to graze, grass carp more than 250 grams of herbivory daily up to 50 to 70% of body weight. In order to make the grass carp grow fast, the following methods must be grasped when grazing grass: First, the grass carp like to eat the parallel veins of long leaves of young grass, anorexia reticulata circular forage should be planted with rye grass, sudangrass and collecting wild long leaves Tender grass fed. Second, feeding the main grassy land. Terrestrial grass 15 kg can grow 1 kg of fish; aquatic grass 60 to 80 kg only 1 kg of fish.