紫花苜蓿属多年生豆科草本植物。作为牧草,紫花苜蓿产量高,且营养价值列牧草之首。其干物质的精蛋白含量一般为15％～20％,赖氨酸含量为1.06％～1.38％。紫花苜蓿生长寿命可达二三十年,是最好、最经济的饲草。随着种植结构的调整,苜蓿的种植将日渐扩展。 1.土壤条件 苜蓿适应性广,但以土层深厚、平 Alfalfa is a perennial leguminous herb. As a pasture, alfalfa produces high yields and ranks first in the nutritional value of pasture. The dry matter of protamine content is generally 15% to 20%, lysine content of 1.06% to 1.38%. Alfalfa growth life of up to twenty or thirty years, is the best and most economical forage. As the planting structure is adjusted, the planting of alfalfa will be gradually expanded. 1. Soil conditions alfalfa wide adaptability, but with deep soil, flat