岢岚县位于晋西北黄土高原,是我省的高寒地区。海拔1,500—1,700米,年平均气温5℃,无霜期仅100天左右。6月飞雪在当地并非罕见。历史上蔬菜种植面积很小,种类单调,主要是茴子白、马铃薯(粮菜兼用),蔬菜供应奇缺。尤其作为我国北方冬季主要蔬菜的大白菜,过去曾几经试种,屡遭失败。当地蔬菜供应主要依赖长途调运。据统计1967—1976年10年间,每年从山东、河北和我省晋中等地调进大白菜200—250万斤,长途调运损失很大,能供食用的仅占60%左右,因此,“吃莱少,吃大白菜难”是当地人民生活中迫切期望解决的一个大问 Lang Lan County is located in the northwestern Shanxi Loess Plateau, is the alpine region in our province. 1,500-1,700 meters above sea level, the annual average temperature of 5 ℃, frost-free period is only about 100 days. June snow is not uncommon in the area. The history of vegetable cultivation is very small, monotonous species, mainly fennel white, potato (both food and grain), lack of supply of vegetables. In particular, as the main winter vegetables in northern China’s cabbage, after several trials in the past, repeated failures. Local vegetable supplies rely mainly on long-distance transport. According to statistics 1967-1976 10 years, from Shandong, Hebei and Jinzhong in our province transferred 200-250 kilograms of Chinese cabbage, long-distance transport loss is very large, only about 60% for food consumption, therefore, "eat Tolerant to eating Chinese cabbage is a big question urgently desired by the local people