荞麦是陕西省南北山区的传统作物。它生长期短,一般60～70天,适应性广,耐瘠薄,不择土壤,能单种也能套种。当夏秋作物受到自然灾害时,它是理想的救灾作物。它的产量和面积年际变化较大,一般丰年种的少,灾年种的多,常年种植150～200万亩。目前陕西栽培的荞麦类型主要有两种,一种是甜荞,一种是苦荞。品种多为农家种。荞麦的营养价值较高,国际食品营养研究证实,荞麦是淀粉粮食中营养很丰富的粮种。其子实蛋白质营养效价指数高达80～90%,均高于小麦和大米。所含脂肪多为不饱和的油酸和亚油酸,含的 Buckwheat is a traditional crop in mountainous areas in north and south of Shaanxi Province. Its short growth period, generally 60 to 70 days, wide adaptability, resistance to infertility, do not choose soil, can single species can interplanting. It is an ideal disaster relief crop when summer and autumn crops are exposed to natural disasters. Its production and area vary greatly from year to year. Generally, there are fewer abundant bouts of yearlings and more species of calamities, with annual planting of 150-2 million mu. At present, there are mainly two types of buckwheat cultivated in Shaanxi, one is buckwheat and the other is buckwheat. Variety of mostly farm species. The nutritional value of buckwheat is higher, international food nutrition research confirmed that buckwheat is rich in starch grain food grains. Its sub-protein nutritional potency index as high as 80 ~ 90%, higher than wheat and rice. The fat contains mostly unsaturated oleic acid and linoleic acid, including