Walnut tree requirements for environmental conditions
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2, light the light of the walnut light, enter the result period after the need for adequate lighting conditions, the annual sunshine hours to more than 2000 hours in order to ensure the normal growth and development of walnuts, such as less than 1000 hours, the nuclear shell, nucleoli are stunted . In the cultivation, from the choice of the garden, planting density, cultivation methods, and pruning, all must consider the lighting problem.
3, soil soil is the basis for the growth and development of all plants. Walnut's huge roots and trees first require a deep layer of soil (greater than 1 meter) to ensure its good growth and development.
4, moisture Walnut resistant to dry air, but the soil moisture situation is more sensitive, the soil is too dry or too wet are not conducive to the growth of walnuts and results. Therefore, it is necessary to adopt soil and water conservation engineering measures in the mountain and walnut gardens, and to solve the drainage problem in the plains. The groundwater level in the walnut garden should be less than 2 meters above the surface.
5. Other walnuts prefer loose soil and good drainage, and poor growth in soils with high groundwater levels and heavy mud. It grows best on calcium-containing slightly alkaline soils. The soil pH range is 6-8, and the soil salt content should be less than 0.25%. A slight increase will affect the growth results. Excessive salinity can lead to death. Walnut fertilizer, apply organic fertilizer.