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一、目的与意义陕西省是我国最早栽培苜蓿地区之一,播种面积约300万亩,占全国栽培面积1755.93万亩的17％。苜蓿是陕西省各类家畜的优良饲料,同时是农田的“养地作物”,农牧业用途重要。惟陕西省地形南北狭长,分为陕北、关中和陕南三个地区,气候、水分、土壤各异,大部分地区均可栽培苜蓿,但在苜蓿种质方面存在着
I. Purpose and Significance Shaanxi Province is one of the earliest cultivated alfalfa areas in China with sown area of about 3 million mu, accounting for 17% of the national total of 17.5593 million mu of cultivated land. Medicago sativa is an excellent feed for all kinds of livestock in Shaanxi Province. It is also a “land-growing crop” for farmland, and the use of agriculture and animal husbandry is very important. However, the terrain of Shaanxi Province is long and narrow in the north and south and is divided into three areas of northern Shaanxi, central Shaanxi and southern Shaanxi. There are different climate, water and soil, and alfalfa can be cultivated in most areas. However,