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紫花苜蓿是一种优质高产,各类家畜都喜食的多年生豆科牧草。它不但是一种优良的牧草及饲料,而且可以改良栽培土壤,培肥地力。据史料记载,早在3300年前,人类已开始用苜蓿作饲料;在我国已有2000多年的栽培历史。因苜蓿能抗旱、耐寒、耐贫脊的土壤,在我国寒冷干旱的山区都以紫花苜蓿为最主要的栽培牧草,并且全国各地均有种植,而且形成许多地方品种,如新疆苜蓿、肇东苜蓿、陇东苜蓿、晋南苜蓿等。据不完全统计,全国种植面积已达1800万亩。一、苜蓿的种植苜蓿适宜生长在年均降水量400—500毫米,年均温度在5—12℃,≥0℃积温3000—5000℃的地
Alfalfa is a kind of perennial leguminous pasture with high quality and high yield, all kinds of livestock. It is not only a good forage and feed, but also can improve the cultivation of soil, fertility and fertility. According to historical records, as early as 3,300 years ago, humans have begun to use alfalfa for feed; in our country has more than 2,000 years of cultivation history. Because alfalfa drought-resistant, cold-resistant, poor ridge-resistant soil in China’s cold and arid mountain alfalfa Alfalfa are the main cultivation forage, and throughout the country are planted, and the formation of many local varieties, such as Xinjiang alfalfa, Zhaodong alfalfa , Longdong alfalfa, Jinnan alfalfa and so on. According to incomplete statistics, the planting area of the country has reached 18 million mu. First, the planting of alfalfa suitable for growing alfalfa in the average annual rainfall of 400-500 mm, the average annual temperature of 5-12 ℃, ≥ 0 ℃ accumulated temperature 3000-5000 ℃ to