一、改革饲料结构，推广种草养鱼以青饲料代替精饲料，是降低成本增大效益的有效途径。为此要根据当地情况，因地制宜，尽可能利用他埂隙地，种植苏丹草、宿根黑麦草、紫花首获、售美菜等优质青绿饲料。有条件还可放养浮萍、芜萍、水浮莲、水葫芦、水花生等。用此办法饲料成本 First, to reform the feed structure and promote green grass to replace forage with green fodder is an effective way to reduce costs and increase benefits. To this end, according to local conditions, according to local conditions, as far as possible to make use of his crevice, planting sudangrass, perennial ryegrass, purple first, the sale of green vegetables and other high-quality green feed. Conditionally stocking duckweed, Wu Ping, water lettuce, water hyacinth, peanut water and so on. Feed costs in this way