Can apple trees be planted in the south?

It can be planted in Sichuan, Yunnan, Hebei, Shanxi, Shandong, Shaanxi, Gansu and Tibet. Suitable for hillside terraces, plain mines and loess hills, with an altitude of 50-2500m. Originated in Europe and Central Asia, it has a long history of cultivation and is cultivated in temperate regions all over the world.

Apples can adapt to most climates. It is the best choice for apple growth between 35-50 degrees north and south latitude. Apples need 1000- 1600 units of heat and 120- 180 days of frost-free weather. Warm during the day and cold at night, and as much light radiation as possible is the premise to ensure good quality.

Apples can resist the frost of MINUS 40℃, and if the temperature is between -2.2℃ and -3.3℃ during flowering and fruiting, the yield will be affected.

Extended data

1, plant culture

For a long time, Newton thought that there must be a mysterious force pulling the planets in the solar system around the sun. One day, when Newton was thinking under the apple tree in the garden and an apple fell at his feet, Newton finally had an epiphany and his problem was gradually solved.

Legend has it that in the autumn of 1665, Newton sat under the apple tree in his yard, thinking hard about the reason why the planets revolve around the sun. At this moment, an apple happened to fall. It landed at Newton's feet. This is a moment of discovery. This apple fall is different from countless previous apple falls because it caught Newton's attention.

Newton found the reason of apple falling from the natural phenomenon of apple falling-the role of gravity. This invisible force from the earth pulls the apple down, just like the earth pulls the moon around the earth.

This story is said to have spread after Newton's niece, Lady Barton, told Voltaire, a French philosopher and writer. Voltaire wrote in the book Principles of Newton's Philosophy.

This apple tree in Newton's hometown was later transplanted to Cambridge University. After Newton's death, he was regarded as a hero who discovered the laws of the universe, and was later endowed with legend. The story of Newton and Apple was widely circulated.

Step 2 manage

Orchards that did not apply base fertilizer in autumn and winter last year should be applied immediately after thawing (but the effect is not as good as that in autumn). After fertilization, if there are irrigation conditions, water should be poured into the garden once, and shallow hoeing should be done in time to preserve moisture. Dry land orchards should be raked to conserve moisture, then fertilized, and then quickly leveled and patted to conserve moisture.

Young and weak trees will be covered with "banded" films to increase temperature and keep moisture, thus promoting the robust growth of trees. The fertilization method is to dig a "ring ditch" or "well ditch" with a width of 50 cm and a depth of 50 cm under the crown projection, and apply all the base fertilizer prepared in autumn and mix it with the soil.

Sprinkle all the topdressing (multiple compound fertilizers, urea, etc.). ) in the tree tray, then turn into the soil, rake and pat it flat.

3. Temperature

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℃, the annual accumulated temperature is ≥ 10℃, and the average temperature in the growing season (April ~ 10) is about 5000℃.

In winter, when the temperature is below 7.2℃, it takes 1200 ~ 1500 hours to successfully pass the natural dormancy. It is generally believed that apples can be planted in areas where the annual average temperature is 7.5 ~ 14℃.

Step 4 precipitate

The precipitation per mu during the apple growing period is about 180mm. Generally, natural precipitation can actually be absorbed by fruit trees, which is about 1/3, so it is enough to have a precipitation of 540 mm during the growing period. Areas with rainfall below 450 mm from April to September need irrigation.

The precipitation in northern China is unevenly distributed, with 70-80% concentrated in July-August, but there is insufficient water in spring. There is little precipitation and water shortage in inland areas, so irrigation conditions and soil and water conservation measures must be considered when building gardens and selecting land, and drainage measures should also be paid attention to in rainy season.

5. sunshine

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. In this range, the light intensity increases and photosynthesis is also strengthened.

Insufficient sunshine will cause a series of reactions such as excessive growth of branches and leaves, weakness, poor resistance to pests and diseases, less differentiation of flower buds, less nutrient storage, low flowering and fruit setting rate, affected root growth, low sugar content of fruits, and chromatic aberration.

Baidu Encyclopedia-Apple

Baidu Encyclopedia-Apple