A Complete Analysis of the Key Points of Large Hazelnut Cultivation Techniques
Hazel trees are suitable for planting on sunny slopes; their growth and fruiting performance on sandy loam is better than on clay soil, and they have strong adaptability to various soils. For powdery mildew and fruit borers, two pesticide applications per year in spring and summer are sufficient; hazel trees bear male and female flowers on the same tree, but a single variety cannot self-pollinate or its pollination compatibility is extremely weak, so multiple varieties must be planted together when establishing an orchard; for orchards on flat land, the recommended plant spacing should not be less than 2.5 m, with a row spacing of 3 m being appropriate.
1. Sun-loving: On mountain sunny slopes, hazel tree growth and fruiting performance is better than on semi-sunny slopes, while on shady slopes hazel tree growth and fruiting is slightly weaker; hazel trees are not suitable for growing in waterlogged low-lying flat land.
2. Soil preferences: Growth and fruiting performance on sandy loam is better than on clay soil, and they have strong adaptability to various soils, showing the drought tolerance, cold tolerance and tolerance of poor, thin soil characteristic of hybrid European hazel.
3. Few diseases: For powdery mildew and fruit borers, two pesticide applications per year in spring and summer are sufficient, making management simpler than with other fruit trees.
4. Pollination: Hazel trees bear male and female flowers on the same tree, but a single variety cannot self-pollinate or its pollination compatibility is extremely weak, so when reliable artificial pollination of hazel trees cannot be ensured, multiple varieties must be planted together when establishing an orchard.
5. Planting density: A five-year-old hazel tree can reach 2.5 m in height, and the canopy can spread to a diameter of more than 2 m. For orchards on flat land, the recommended plant spacing should not be less than 2.5 m, with a row spacing of 3 m being appropriate; for hillside land and terraced fields, it depends on the slope and soil conditions, and the recommended plant spacing should not be less than 2 m.