种植渔用青饲料,以草换鱼,可以降低生产成本,提高鱼品质量,保护鱼池埂坡,优化水域环境,是提高池塘养鱼综合经济效益的有效途径。抓紧青饲料的春种是搞好水产养殖的重要一环,现介绍几种青饲料及栽培技术。 1.紫花苜蓿:紫花苜蓿是多年生豆科植物,粗蛋白质占干物质22.1％,含有十多种必需氨基酸和鱼类必需的多种矿物质和微量元素。苜蓿抗旱能力强,肥沃的壤土和砂壤土都可种植,酸性、盐渍、沼泽地不宜播种。其种子小、硬实, It is an effective way to improve the comprehensive economic benefits of fish culture in ponds by planting green fodder for feeding and changing grass for fish, which can reduce the production cost, improve the quality of fish products, protect the pond slope and optimize the water environment. Pay close attention to green feed spring is to improve aquaculture an important part of the current are introduced several green feed and cultivation techniques. 1. Alfalfa: Alfalfa is a perennial legume, crude protein accounted for 22.1% of dry matter, contains more than 10 kinds of essential amino acids and fish necessary for a variety of minerals and trace elements. Alfalfa drought-resistant ability, fertile loam and sandy loam can be planted, acidic, salty, wetlands should not sow. Its seeds are small, hardcore,