1, temperature: chestnut is suitable for growing 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. Moisture: Chestnut can be planted anywhere with annual rainfall of 500 ~ 2000mm, but the place with annual rainfall of 500 ~ 1000mm is the most suitable. 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. Illumination: Chestnut is a tree species with strong photophobia, and it needs sufficient illumination during its growth. 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. Soil: Chestnut is suitable to grow on sandy loam with more organic matter and good ventilation, which is beneficial to the growth of roots and the production of a large number of mycorrhiza. It does not grow well in the soil with high viscosity, poor ventilation and poor drainage (easy to accumulate water) in rainy season. Chestnut is sensitive to soil pH, the suitable pH range is 4~7, and the most suitable is slightly acidic soil of 5~6. Weathered soil in limestone mountain area is mostly alkaline, which is not suitable for developing chestnut. Granite and gneiss weathered soil is slightly acidic and breathable, which is suitable for chestnut growth.

Extended data:

Control of chestnut seedling;

1. Eliminate other oak trees near the chestnut nursery;

2. Plough the soil of chestnut orchard in autumn and winter, spray a new high-fat film on the soil surface to form a protective film, isolate the nutrient supply of pests and diseases in the soil, and achieve good control effect.

3. In chestnut orchards with high adult density, 3000 times of new high-fat film or 2.5% triadimefon emulsifiable concentrate, 2000 times of 80% emulsifiable concentrate and 2000 times of 50% phoxim emulsifiable concentrate can be sprayed on the crown continuously for 2-3 times.

References:

Chestnut tree-Baidu encyclopedia