陕北枣区的地位研究

Research on Status of Jujube Region in North Shaanxi

陕北枣区位于黄土高原北部的陕北黄河沿岸土石山区,属黄土高原丘陵枣区。根据陕北枣区的地理位置和区域特征,比较研究了陕北枣区与全国主要枣产区的平均气温、降雨量、日照时数、有效积温等气象因子,以及各物候期内主要气象因子和各物候期出现时间的差异。结果表明,陕北枣区是我国气候偏凉的优良晚熟制干枣的优生区。特别是由于陕北枣区地处山区,交通不便,自然条件恶劣,气候干旱,制干枣品种应是陕北枣区发展的主体;并由于陕北气温偏凉,具有特殊的气候特征,发展品种应以适应当地的品种为主,尤其是当地良种。

Jujube region of north Shaanxi is located in the north of loess plateau, the west bank of the Yellow River, the region belongs to hilly jujube region of loess plateau. According to the location and charcteristics of the region, the meterological elements between the region of north Shaanxi and others main jujube production regions in China were compared, and the relationship between different phenology and corresponding meterological elements analyzed. The results showed that north Shaanxi is the first cultivated region of lateripe makingdry jujube with the cool temperate. Due to the natural condition, the makingdry jujube varieties should be developed in the area, especially local varieties.