饲料费一般约占养鱼总开支的70%,节省饲料是提高养鱼经济效益的有效措施。现简介省料的5种方法: 1.以草代料。每亩水面种4分田的优质牧草,种一次草可割几茬。以牧草喂鱼,可少用或不用饲料。牧草一般可亩产5吨,平均每25公斤青料长1公斤鱼,而且鱼食青料不易得病。2.诱蝇育蛆。夏季在鱼塘水面安装数盏6瓦灯泡,每盏电灯每晚可 Feed costs generally account for about 70% of total fish consumption, saving feed is an effective measure to improve the economic benefits of fish farming. Now introduce 5 kinds of methods to save material: 1 to grass substitutes. 4 acres of water per mu of high-quality forage grass, a grass can cut a few stubble. Feeding forage grass, with little or no feed. Forage generally yields 5 tons per mu, an average of 1 kg of fish per 25 kg of green material, and fish meal green material is not easy to get sick. 2. Attract fly breeding maggots. In the summer, several 6-watt light bulbs are installed on the surface of fish ponds, and each lamp can be used nightly