固原地区的冬小麦主要分布在固原县东南部的彭阳、城阳一带,其次是泾源、隆德、西吉三县,海原县较少。据调查,该地区冬麦已有六、七十年的种植历史,但常发生冬春死苗现象,轻则缺苗断垄,造成减 The winter wheat in the Guyuan area is mainly distributed in the areas of Pengyang and Chengyang in the southeastern part of Guyuan County, followed by the Jingyuan, Lund and Xiji counties, but less in Haiyuan County. According to the survey, winter wheat in the area has been planted for six or seventy years, but winter and spring dead seedlings often occur, ranging from lack of seedling to breaking the ridge, resulting in a decrease of