苜蓿是种多年生牧草,性喜温暖、半干旱气候,根系发达,能吸收土壤深层水分,抗旱能力强,最适宜在中性砂质土壤或微碱性土壤生长。以我国西北、华北、东北气候土壤最为适宜,对苜蓿的栽培和利用有悠久的历史。苜蓿都作为养畜的优质牧草和晒制成冬季的最佳干草,在养畜的饲料中,苜蓿是居重要地位。苜蓿在南方栽培,就不象北方那样普遍,我省以往极少种植,从自然条件来看,气候温和,夏秋季雨量充沛,土壤粘 Medicago sativa is a kind of perennial pasture, with a warm, semi-arid climate and developed roots. It can absorb the deep water of the soil and has strong drought resistance. It is most suitable for growing in neutral sandy soil or slightly alkaline soil. In China’s northwest, north, northeast climate and soil most suitable for the cultivation and use of alfalfa has a long history. Alfalfa is the best hay for livestock raising and the best hay for sun-drying in winter. Alfalfa is an important factor in livestock feed. Medicago sativa cultivation in the south, not as common as the north, the province rarely planted in the past, from the natural conditions, mild climate, rainfall in summer and autumn, soil sticky