紫花苜蓿被称为“牧草之王”,我国主要在西北、华北、东北各省栽培种植。紫花苜蓿适于温暖半干旱气候,生长发育最适宜温度为25℃左右,温带和寒带均能生长。在我国北方冬季-20—30℃低温条件下能安全越冬。紫花苜蓿需水量比禾本科牧草多两倍,尤其是孕蕾到始花期。适合年降水量500～800毫米的地方和半干旱有灌溉条件地方生长。不耐水渍,地下水位高,土壤过于 Alfalfa is known as the “king of pastures,” and our country is mainly cultivated and cultivated in the provinces of Northwest, North China and Northeast China. Alfalfa is suitable for warm and semi-arid climate, and the most suitable temperature for growth and development is about 25 ℃. Both temperate and boreal zones can grow. In our northern winter -20-30 ℃ low temperature conditions can be safe and wintering. Alfalfa needs twice as much water as grasses, especially during pregnancy and flowering. Suitable for places with annual rainfall of 500 to 800 mm and in semi-arid irrigation areas. Impatience with waterlogging, high water table, soil is too large