Shangluo City is located in the southern mid-latitude zone of my country, at the southern foot of the Qinling Mountains in eastern Shaanxi Province, and belongs to the monsoon climate zone. It is geographically distributed at the junction of the northern subtropical zone and the warm temperate zone. It has the transitional characteristics of two climate zones in the horizontal direction. The southern part has a northern subtropical climate and the northern part has a warm temperate zone climate. The city has no severe cold in winter and no scorching heat in summer. It is prone to drought in winter and spring, rainy in summer and autumn, and is warm and humid with four distinct seasons. The annual average temperature is 7.8-13.9℃, the annual average precipitation is 696.8-830.1 mm, and the annual average sunshine hours is 1848.1-2055.8 hours.