Generally speaking, fall, which is from July to November, is the ripening season for apples.

China's apple producing areas are mainly the four major producing areas of the Loess Plateau in the northwest (Shaanxi, Gansu and Shanxi), Bohai Bay (including Shandong, Hebei and Liaoning), the old course of the Yellow River (Henan, Jiangsu and Anhui), and the cool uplands in the southwest.

Based on the climate and ecological suitability standards, the Northwest Loess Plateau production area and Bohai Bay production area is the most suitable for apple development in China's production areas, the Yellow River Road production area belongs to the apple production of sub-suitable areas, the Southwest cold highland apple production scale is small, the industrial base is poor, and unable to meet the requirements of the advantageous areas of apple production.

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Climate conditions for apple planting requirements:

1, temperature

Apple tree is a preferred low-temperature dry temperate fruit trees, the requirements of the winter is not cold, summer is not very hot. The appropriate temperature range is the average annual temperature of 9 to 14 ℃. It is generally believed that the average annual temperature of 7.5 to 14 ℃ in the region, can be cultivated apple. Apple natural dormant period is long, such as high winter temperatures, can not meet the winter dormant period of the required low temperature, the spring germination is not uniform.

2, precipitation

Apple in the growing period of about 180 millimeters of precipitation per mu. General natural precipitation, can actually be utilized to the fruit tree absorption of about one-third, so that the growing season precipitation can be 540 millimeters, has been sufficient. Inland precipitation in areas with little water, water is not enough, so in the establishment of the garden selection, must take into account the irrigation conditions and moisture retention measures, but also pay attention to the rainy season drainage measures.

3, sunshine

Apple trees are light-loving species, light enough to grow normally. According to Shandong Agricultural University determination, Taian region, the Golden Crown, the new Red Star, light compensation point of 600 to 800 meters candlelight, saturation point in 3500 to 4500 meters candlelight. In this range of light intensity increases, photosynthesis is also strengthened.

4, soil

Soil has a great influence on the growth, yield and quality of apple. The main factors are soil layer, soil aeration, soil quality. In short, apples need fertile, deep, well-drained soil, rich in organic matter, slightly acidic to slightly alkaline.

5, wind

Gale force winds often bring many adverse effects to the growth and development of the apple, such as causing the crown skewed, affecting the flowering, pollination, destruction of leaf organs, and fruit drop, etc., so the establishment of the apple orchard in windy areas, it must be created to prevent wind forest.

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