basemap画地图出现问题

锦叶seven

求教！！！利用basemap画地图，已经设置了边界以及中心经纬度，但却画出来这样子……

这是代码，求大佬指教！
m = Basemap(projection='cyl',resolution='i',llcrnrlon=110,llcrnrlat=21,urcrnrlon=112,urcrnrlat=23,lat_0 =22, lon_0 = 111)fig, ax = plt.subplots(figsize=(16,9))

shp_info3 = m.readshapefile('D:\Data\map_file\CHN_adm_shp\CHN_adm3','states',drawbounds=False,linewidth = 0.4,zorder=10)
for info, shp in zip(m.states_info, m.states):
    proid = info['NAME_2']  # 可以用notepad打开CHN_adm1.csv文件，可以知道'NAME_1'代表各省的名称
    if proid == 'Maoming':
        poly = Polygon(shp,facecolor='None',edgecolor='b', lw=0.8)
        ax.add_patch(poly)
    else:
        poly = Polygon(shp,facecolor='w',edgecolor='w', lw=0.8)
        ax.add_patch(poly)

#市一级底图
shp_info2 = m.readshapefile('D:\Data\map_file\CHN_adm_shp\CHN_adm2','states',drawbounds=False,linewidth = 0.4,zorder=10)
for info, shp in zip(m.states_info, m.states):
    proid = info['NAME_2']
    if proid == 'Maoming':
        poly = Polygon(shp,facecolor='None',edgecolor='black', lw=0.8)
        ax.add_patch(poly)

锦叶seven

file:///C:/Users/yang/Desktop/QQ%E5%9B%BE%E7%89%8720210113233444.png