Are apples tropical fruits?

Apple tree is a temperate fruit tree that likes low temperature and dryness. It requires no cold in winter and no heat in summer. The suitable temperature range is the annual average temperature of 9 ~ 14℃, the extreme low temperature in winter is not lower than-12℃, the highest monthly average temperature in summer is not higher than 20℃, and the annual accumulated temperature is about 5000℃ ≥ 10℃.

In the growing season (April ~ 65438+1October), the average temperature is 12 ~ 18℃, and it takes 1200 ~ 1500 hours to successfully pass the natural dormancy when it is lower than 7.2℃ in winter.

Apples can be planted in areas where the annual average temperature is 7.5 ~ 14℃. The natural dormancy period of apples is very long. If the temperature in winter is too high to reach the low temperature required for winter dormancy, the germination in spring will be uneven.

Judging from the areas with the most apples in the world, the average temperature in Leng Yue in winter (65438+ 10 in the northern hemisphere and July in the southern hemisphere) is between-10 ~ 10℃, which can meet the requirements of low temperature for apples.

Extended data:

Apple tree is a light-loving tree, and it can grow normally only when there is enough light. According to the measurement of Shandong Agricultural University, the light compensation point of Jinguan and emerging areas in Tai 'an is 600 ~ 800 m candle, and the saturation point is 3500 ~ 4500 m candle.

Soil has a great influence on the growth, yield and quality of apples. The main factors are soil layer, soil ventilation and soil quality. In a word, apples need fertile and deep soil, good drainage, rich organic matter, slightly acidic to slightly alkaline.

Strong winds often bring many adverse effects to the growth and development of apples, such as causing crown deflection, affecting flowering, pollination, destroying leaf organs, fruit dropping and so on. Therefore, windbreaks must be built to establish apple orchards in windy areas.