1. The favorable conditions for the growth of selenium sand melon in Mingsha Town, Zhongning County: 2. The sun around the western cloud base.

Advantages: It is located in the mid-latitude inland area, with large temperature difference between day and night and strong illumination. Close to the river, there is plenty of irrigation water. The soil is fertile and rich in trace elements such as selenium. Located in a river valley, flat terrain, etc. Two o'clock is enough. Cloud base: The temperature is still close to 30 degrees Celsius, the road leading to the base is wide and flat, and there are shining photovoltaic panels in the north, absorbing energy from the sun.