Walnut trees have high nutritional value and are a good food for health. But do you know how to plant walnut trees? Then let’s take a look at the recommendations I have carefully recommended for you. I hope they can be helpful to you. help.

Scientific Cultivation and Management Technology of Walnuts

1. Site selection for cultivation: Walnuts are suitable for growing on sandy soil and black loam soil that are warm, deep and well-drained, and should be grown on sunny slopes and Plant in the leeward position. Newly planted saplings should have sufficient water and fertilizer, and a new high-fat film should be sprayed to ensure the evaporation of water on the ground and the transpiration of water in the seedlings, isolate pests and diseases, shorten the seedling slowing period, and accelerate root development.

2. Shaping and pruning: In order to achieve early fruiting, high yield, stable yield and reasonable pruning of walnuts, it is a very important cultivation technique. The pruning period of walnuts is different from that of ordinary fruit trees. It should be done after the fruits are harvested and before the leaves turn yellow. A callus antiseptic film should be applied to the cut wounds in time to promote wound healing and prevent bacterial invasion and infection.

3. Stabilize flowers and stabilize fruits: Spray fruit-strengthening spirit during the flower bud stage, young fruit stage and fruit expansion stage to thicken the fruit base, increase nutrient delivery, prevent flower drop, and improve growth rate. Pollination ability, improve fruit setting rate, accelerate expansion speed, ensure high quality and high yield of fruit. The size of the tree's fruit-bearing years causes the tree's load to be unbalanced, which not only affects the balanced income, but also affects the health of the orchard tree. Brushing Kao No. 2 once a year during the flower bud differentiation period can promote flower bud differentiation, inhibit wild shoot growth in summer, strengthen flowers and improve pollination ability and fruit setting rate.

4. The main pests of walnuts are: walnut silkworm moth, walnut limb-lifting moth, and walnut fruit weevil. The main diseases of walnuts are: walnut black spot and walnut blight. Prevention and control measures include spraying targeted drugs to kill. At the same time, the tree body should be sprayed with tree protector, and the garden should be sprayed with a new high-fat film to maintain heat and moisture to ensure a safe winter.

Walnut tree cold protection technology

Due to the large pith of walnut tree branches, high water content, and poor cold resistance, they are prone to frost damage in relatively cold and arid areas in the north, causing the branches to wither. . Therefore, in order to ensure the normal growth of saplings and prevent frost damage, winter cold protection work should be strengthened to reduce the damage. Here are several cold-proof measures for the reference of fruit farmers:

After the walnut trees lose their leaves, cold-proof measures can usually be carried out from mid-November to early December.

1. Bury soil to prevent cold. For 1 to 2-year-old saplings that cannot safely survive the winter in the open, bend the entire tree body to one side and cover it with soil. This method is the most effective and reliable measure to prevent stripping.

2. Build soil to prevent cold. Build a mound of soil within 30 cm of the base of the seedlings to prevent frost damage to the root neck and grafting interface. Remove it after the temperature rises and stabilizes in the following spring and level the tree disk.

3. Paint saplings white to prevent cold. Painting saplings white can alleviate the temperature difference between the yin and sun sides of the trunk, and has a better cold protection effect. It can be applied before the soil freezes. The formula of the whitening agent is: 0.5 kg of salt, 6 kg of quicklime, 15 kg of water, then add an appropriate amount of adhesive and the residue of the lime sulfur mixture and apply it all over the young branches and trunks.

4. Apply polyvinyl alcohol. Use the boiled polyvinyl alcohol to evenly coat the main trunk of the seedlings. The cooking method of polyvinyl alcohol is: generally using the ratio of "polyvinyl alcohol: water = 1:15-20". First boil the water to about 50℃, then add polyvinyl alcohol. Do not wait until the water boils before adding, otherwise the polyvinyl alcohol will not be completely dissolved and the solution will be uneven. Stir as you add until it boils, then simmer for 20- It will be ready after 30 minutes. Use after the temperature drops to a point where it is no longer hot.

Climatic requirements for walnut planting

Walnuts have wide adaptability, strong light-loving ability, and drought resistance. When building a garden, it is best to choose a gentle slope with flatter terrain or a slope below 10° with good lighting. The garden should be built in a place with deep soil, loose soil structure, pH value between 6.5 and 7.5, and groundwater level below 2 m with good drainage to promote early fruit and high yield.

The optimum annual average temperature is 8-15 degrees Celsius, the extreme low temperature is not less than -30 degrees Celsius, the extreme high temperature is below 38 degrees Celsius, and the frost-free period is more than 150 days. The annual sunshine should not be less than 2,000 hours, at least not less than 1,000 hours. The more sunshine, the better the quality. However, different varieties still have many differences in their climate requirements.

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