Jingning County is located in the eastern part of Gansu Province, in the hilly and gully region of the Loess Plateau. Loessial soil is the main soil, accounting for 9 1. 18% of the county's soil area. The content of soil organic matter is 0.92%, total nitrogen is 0.072%, available phosphorus is 8.24PPM, and available potassium is 170. 1PPM. It is a warm temperate semi-humid and semi-arid climate with four distinct seasons, mild climate and abundant sunshine. The annual average temperature is 7. 1℃, the frost-free period is 159 days, and the annual average sunshine hours are 2238 hours. There is more precipitation in summer and less precipitation in winter and spring, with an average annual precipitation of 450.8 mm and annual evaporation of1469 mm. The unique geographical, temperature and soil characteristics are very beneficial to apple production. Jingning was rated as "the best planting area for eugenic apples on the Loess Plateau" by the Ministry of Agriculture.