Temperature 1. Chestnut is suitable to grow in the range of annual average temperature 10- 17℃. During the growing period (April-65438+1October), the daily average temperature is 10-20℃, the winter temperature is below -25℃, and the suitable temperature for flowering is 17-27℃, below 15℃ or above 27℃. During the fruit growing period from August to September, the average temperature above 20℃ can promote the growth of nuts.

2. Castanea mollissima can be planted in the place with annual rainfall of 500-2000 mm, but the most suitable place is 500-1000 mm. Different phenological periods have different requirements and responses to water, especially during the filling period of chestnut in autumn. If the water is sufficient, it will be beneficial to the full growth of nuts and the increase of yield.

3. Castanea henryi is a tree species with strong photophobia, and it needs sufficient light in its growing period. In the valley area where the average daily illumination time is less than 6 hours, the trees grow upright, with sparse branches and leaves, low yield and poor quality. Therefore, the selection of garden, the establishment of planting density, the way of shaping and pruning and other cultivation management should be considered according to the characteristics of chestnut's strong photophobia.

4. Castanea mollissima is suitable to grow in sandy loam with more organic matter and good ventilation, which is beneficial to the growth of roots and the production of mycorrhiza in large quantities. It does not grow well in the soil with high viscosity, poor ventilation and poor drainage (easy to accumulate water) in rainy season.

Everyone should eat chestnuts often. I really didn't know chestnuts grew on trees before. I think this is more suitable in long soil, or I guess even chestnut trees should be as short as bushes. There is no reason to arrange chestnut trees again and again. Today, I collected some information about chestnut tree planting and shared it with you. Here's how chestnut trees are planted and how many years they bear fruit.

First, how many years did it take for chestnut trees to bear fruit?

Grafting chestnut trees began to bear fruit in 2~3 years. Seedling chestnut trees bear fruit in 5~8 years, and the chestnut trees enter the peak of fruit bearing in about 20 years.

Second, planting techniques of chestnut trees

1. Requirements of chestnut on environmental conditions

Chestnut is one of the earliest economic tree species cultivated in China, and it likes light. It can be cultivated in soil with pH of PH4.5-7.5, with an annual average temperature of over l0 degrees, an average growth temperature of 16-20 degrees, and a minimum temperature of minus 25 degrees in winter. Chestnut has strong adaptability, wide distribution, easy cultivation and high yield, and can be cultivated economically in mountainous areas and beaches.

2. Selection of cultivated varieties

Hairboard red, nine species, shallow thorn big chestnut, Chu Shuhong, etc.

3. Cultivate strong seedlings

Seed treatment: Chestnut seeds are afraid of dryness, heat and freezing. After seed selection, it is fumigated with aluminum phosphide to kill insects, disinfected with 100 times methyl thiophanate solution, and stored in a clean and humid river sand layer after seed treatment.

Sowing: from early March to early April, sow at a spacing of one foot and five or six inches. It is required that the stem of the seedling should be more than 0.8 cm thick, the height of the seedling should be more than 1 m, the root system should be developed, and the seedlings should be raised per mu 10000.

Timely grafting: chestnut branches contain a lot of tannins, so grafting is not easy to survive. It is necessary to choose a good time and pay attention to grafting methods to improve the survival rate. Autumn August-10, suitable for bud grafting. Splitting and cutting can be carried out 20 days before germination and before the juice is fully circulated in spring. However, subcutaneous grafting should be carried out about 20 days after the newly grown leaves and juices flow fully. Scions should be picked as early as possible before germination, stored in the sand in the shade at low temperature, and stored in the refrigerator if possible.

4. Planting density time

Panxi area is mainly planted in autumn, and areas with water irrigation conditions can be planted in spring. The gentle slope can be fully prepared, the slope should be turned into a horizontal terrace, and the slope with large slope should be prepared with fish scale pit. The planting density is generally 22-33 plants per mu, and the spacing between plants is 5x6m-4x5m. Before planting, base fertilizer should be applied, and 2-3-year-old seedlings with complete roots should be selected. When planting, the roots and neck should be exposed to the ground to avoid planting too deep. Irrigation after planting, and then cover the soil to seal the nest.