在我国北纬44°N以北的高寒地区,由于冬季绝对低温,达-40℃以下,一般优良的载培种果品,已无法正常生产。但是在其山区及其山脚山前的丘陵地带,却生长着根系繁密,生机勃勃的多种野生含维生素较多树种。这类树种,多半低矮,果实瘦小,长期不为人们重视,但是生物化学分析证明:其果实的维生素含量、氨基酸的类別、其营养保健价值,都远远超过常规果树。 In the alpine region north of latitude 44 ° N north of our country, due to the absolutely low temperature in winter, reaching below -40 ° C, the generally fine fruit-bearing cultivars can no longer be produced normally. However, in its mountainous area and its hillside in front of the hillside, there are many more tree species with wild vitality that are rich in root and vitality. Such species, mostly low, fruit thin, long-term people do not pay attention, but the biochemical analysis shows that: the fruit of its vitamin content, amino acid category, its nutritional value, far more than conventional fruit trees.