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一、前言绝大多数多年生牧草是异花授粉植物。世界上及我国著名的多年生禾本科牧草有各种冰草、无芒雀麦、鸭茅、老芒麦、猫尾草、多花黑麦草、多年生黑麦草、高株羊茅、羊草、小糠草、高燕麦、虉草及偃麦草等;豆科牧草有紫花苜蓿、黄花苜蓿及杂种苜蓿、沙打旺、红豆草及红三叶、白三叶、降三叶、杂三叶、百脉根、白花草木栖等。半个多世纪以来,世界上畜牧业发达的国家,在多年生牧草育种方面取得了较大成就,育成了许多有价值的新品
I. Introduction Most perennial grasses are cross-pollination plants. The perennial grasses in the world as well as our country have all kinds of grass, prickly ash, sage, prickly ash, Timothy, ryegrass, perennial ryegrass, tall fescue, Leymus chinensis Such as alfalfa, alfalfa and hybrid alfalfa, sativa, sagittatum and red clover, white clover, lower clover, miscellaneous clover, red clover, Root, white flowers and other habitats. For more than half a century, the countries with developed husbandry in the world have made great achievements in perennial grass breeding and have bred many valuable new products