苜蓿是最优质的多年生豆科牧草,含粗蛋白质,多种维生索和矿物质高,被评为“牧草之王”。并且苜蓿的地下根瘤菌具固氮肥土的作用,澳大利亚新西兰等国验试证明,混播苜蓿的人工草场产草量同每公顷施氮肥三百公斤的黑麦革人工草场产草量相当。目前国内外都大量栽培苜蓿。据调查藏北草原所有的可食优良豆科牧草极少,因此在高寒牧区栽培苜蓿成 Alfalfa is the highest quality perennial legumes, with crude protein, a variety of vitality rope and minerals high, was named “King of forage.” And the underground rhizobia of alfalfa has the function of nitrogen fixing soil. The tests in countries such as Australia and New Zealand prove that the grass yield of artificial grassland mixed with alfalfa is equivalent to that of rye leather artificial grassland with 300 kg nitrogen fertilizer per hectare. At present, a large number of cultivation of alfalfa at home and abroad. According to the survey of all the edible legumes of grassland in northern Tibet very few, so in the alpine pastoral areas of alfalfa into a