Can Chuzhou Dingyuan grow apples?

Chuzhou Dingyuan has obvious monsoon, four distinct seasons, mild climate, long frost-free period, abundant sunshine and little rainfall, so it can grow apples.

Apple growth habit

1. Apple is a deciduous tree with strong polarity. It usually grows vigorously and has a high crown. The height of the tree can reach 15 meters, and it is generally about 3 ~ 5 meters under cultivation conditions. The trunk is grayish brown, the old bark has irregular longitudinal cracks or flaking, and the branchlets are smooth. Fruit is a kind of kernel, and its color and size vary with varieties. Like light, like slightly acidic to neutral soil. It is most suitable for sandy soil with deep soil layer, rich organic matter and good ventilation and drainage.

2. Grafting propagation and cultivation. There are two kinds of rootstocks: arbor rootstocks and dwarf rootstocks. Commonly used tree rootstocks are Juglans mandshurica, Haitang Xifu and Vitex negundo, and dwarf rootstocks are mainly imported from Britain. Wide rows and close planting are adopted, and the behavior is north-south. The soil in southern China is planted before freezing in autumn and winter, and in northern China it is planted during thawing in spring. Apple is weak in self-fruiting, so pollination trees must be arranged when planting.

3. Apple trees begin to bear fruit 2-3 years after planting. Under general management conditions, the economic life is 15 ~ 50 years, while the poor soil and extensive management are only 20 ~ 30 years. Due to the combined effect of apical dominance and bud heterogeneity, apples usually have strong dryness and obvious stratification. Due to the differences in germination and branching ability among varieties, the obvious stratification degree is also different.

4. Apple buds are divided into leaf buds and flower buds according to their properties. Leaf buds are triangular, long and curved, and grow into branches after spreading leaves, which are called new shoots or vegetative branches. Branches can be divided into long branches, common branches, slender branches and leafy branches according to their growth. The flower buds of apples are mixed buds. Axillary flower buds are buds formed in the axils of leaves of branches of the same year, and those that can blossom and bear fruit in the next year are called axillary flower buds. The flower bud differentiation of most apple varieties began in early June and ended before winter. The whole process is divided into three stages: physiological differentiation, morphological differentiation and sexual cell maturation. The flower buds are mixed buds and the inflorescences are corymbose cymes. 5-7 flowers per inflorescence.

5. As far as physiological process is concerned, the temperature required for apple's life activities and growth and development has corresponding minimum, optimum and maximum temperatures of three basis points. Generally speaking, the minimum temperature of apples is about 5.0℃, the optimum temperature is 13-25℃, and the maximum temperature is about 40℃, which varies with varieties, organs, ages, growth periods, physiological processes and temperature changes, as well as other ecological factors. The optimum average temperature of different varieties in growth period is also different.

Dingyuan climate conditions?

1, Dingyuan county belongs to the climate type of transition from north temperate zone to north subtropical zone. The main features are: obvious monsoon, four distinct seasons, mild climate, long frost-free period, abundant sunshine and little rainfall. Due to the influence of monsoon, the rainfall distribution in the four seasons is uneven, and there are droughts and floods. The four seasons are characterized by mild and changeable spring, hot and rainy summer, less rain and more drought in autumn and dry and cold winter.

2. The air pressure in Dingyuan County is high in winter and low in summer, and the spring and autumn are in between. Annual maximum pressure 1 month, annual average pressure 10 18.3 mbar; The low pressure is in July, with an average of 995.2 mbar.

3. Due to the different topography in Dingyuan County, the temperature in the east and west is slightly different. The temperature in the western plain is slightly higher than that in the eastern hilly area. The average temperature in the hottest month is above 28℃, the average temperature in Leng Yue is 1 ~ 1.5℃, the accumulated temperature above 0℃ is 5300 ~ 5400℃, and the accumulated temperature above 10℃ is close to 4800℃. The average temperature in the hottest month in the east is less than 28℃, the average temperature in Leng Yue is 0 ~ 1℃, the accumulated temperature above 0℃ is 5300℃, and the accumulated temperature above 10℃ is 4700℃.