How to build a walnut tree and the environment in which the walnut tree grows?

The walnut tree has been planted for miles, and I don't know how to build it, how do you know? It's so hard???

Walnut planting needs light and ventilation for the growing environment.

Walnut is not strict with environmental conditions, as long as the annual average temperature is more than 9 16, and the annual rainfall is more than 800 mm. Walnut has a wide range of adaptability to soil, but because it is a deep-rooted fruit tree and has weak resistance, it is more suitable to choose a deep and fertile loam with strong water retention. Walnut is a light-loving fruit tree, which requires sufficient light, and it is better to choose the south-facing slope when building a garden in the mountains.

Walnut tree, light-loving, cold-resistant, drought-resistant, disease-resistant, adaptable to a variety of soil growth, like fertile and moist sandy loam, water, fertilizer, sun, at the same time the requirements for water and fertilizer are not strict; It is not suitable for pruning after falling leaves and before germination, which is easy to produce wounds and flows, and is suitable for the growth of most land. It likes calcareous soils and is commonly found in places with deep soil layers on both sides of mountain river valleys.

Walnut, light-loving, cold-resistant, drought-resistant, disease-resistant, adaptable to a variety of soil growth, like fertile and moist sandy loam, water, fertilizer, sun-loving, at the same time the water and fertilizer requirements are not strict, after the leaves fall to before germination should not be pruned, easy to produce wounds. It is suitable for most land growth. It likes calcareous soils and is commonly found in places with deep soil layers on both sides of mountain river valleys.

The above content is the personal opinion of agricultural technicians

Walnut trees are widely distributed throughout the country, and their adaptability is strong, and the requirements for environmental conditions are not very strict.

1. The suitable altitude range for the growth of walnut trees is wide, and there are walnut trees growing at an altitude of 600 to 3800m, and the most suitable area is 1500 and 2400m above sea level.

2. Walnut trees belong to temperature-loving tree species, and the suitable temperature range for growth is the annual average temperature of 9 16, the extreme minimum temperature of -25, the extreme maximum temperature of 38 (more than 38, the fruit is easy to be burned), and the frost-free period of the year is more than 180 days.

3. Walnut is a light-loving tree species, and attention should be paid to planting density and proper shaping and pruning to solve the light problem in production.

4. Walnuts like dry air, walnut trees have large water requirements during the growth period and strong drought resistance, but they are sensitive to soil moisture requirements, and soil is not conducive to growth and fruiting if it is too dry or too wet. For mountain planting, it is necessary to do a good job of replenishing water and retaining water in the dry season in winter and spring; Planting on flat land, the problem of drainage should be solved during the rainy season.

5. Walnut trees have less strict requirements for soil, and can grow both fertile and barren. The thickness of the soil layer is more than 1m, the soil is fertile, and the roots are well developed. Robust growth, high yield, poor soil, low nutrient absorption by roots, poor growth, low yield.

Walnuts love calcium and grow best in neutral to slightly acidic soils, with a pH adaptation range.

6. Walnut trees like to grow in gentle slopes of mountains, deep soil layers, and sunny leeward areas, and walnut trees at the top of slopes and waterlogged areas grow poorly. It is best to choose the middle and lower gentle slopes of the sunny slope for mountain gardening.

There are two types of walnut trees.

1.Walnut, also known as walnut, is a deciduous tree of the Juglans family and Juglans genus.

Ecological habits: positive trees, strong cold tolerance, not tolerant to dampness and heat, high requirements for soil fertility, not tolerant to barrenness, like fertile, moist, well-drained slightly acidic soil to slightly alkaline soil. Deep-rooted, fleshy roots are thick, afraid of stagnant water, rhizosphere germination is strong, and is not resistant to transplantation.

Long lifespan, up to more than 300 years.

2.Thin-shelled pecan, also known as American pecan, long pecan, is a deciduous tree of the family Juglans and hickory.

Ecological habits: Light-loving tree species, which do not grow vigorously under shade conditions, especially during flowering and fruiting, need sufficient light. It prefers warm and humid climates and grows well in deep, loose, well-drained, humus-rich sandy loam soils.

It is more cold-tolerant, water-tolerant, not drought tolerant and barren, and has a wide range of adaptability to soil pH, pH 4 and 8 can grow, but pH 6 is the most suitable. Deep-rooted, symbiotic with mycorrhizae, medium growth rate, strong rhizosphere germination and tillering, and long lifespan.

Walnut is a light-loving masculine tree species that grows in places where the north wind is facing the sun.

The growth of walnuts is generally better in the middle and lower parts of the hillside than in the upper part; Growing on sunny slopes and semi-sunny slopes is better than shady slopes; Gentle slopes are better than steep slopes; It is better to be on the edge of the mountain and in the gully area. According to a survey conducted by the Research Station of the Yunnan Provincial Academy of Forestry, two walnut trees with roughly the same growth condition, one on the sunny slope and the other on the shady slope, but the yield was doubled.

3. Soil conditions.

Walnut has strong adaptability to soil, and can grow on both fertile and barren soils, whether it is hills, mountains, or flat rivers, as long as the soil layer is thick and well drained, it can grow. In valleys with loose soils and good drainage, alluvial land is even better.

And the peach tree grows in the environment and the peach tree is brought in the large forest. The mountains are full of wild growth, and its environment is the first time in the earth, and the environment is also in time. The current living environment, because of the environment of the earth, has created the growth of trees. Therefore, he grows in dense forests and environments.

First, the walnut saplings are treated, then a pit is dug in the ground, and finally the soil is filled and buried.

Prepare some walnut trees first, find a piece of fertile soil and plant them, then water more and fertilize more, and spray pesticides at a time according to the growth cycle of walnut trees.

First of all, you need to choose sandy loam soil for planting, and the second is to dig a pit, apply base fertilizer in the pit, and then you can plant walnut seedlings into it.

Walnut trees are generally planted in spring and autumn, but when planted in pots, they are generally not limited by time and can be planted in all four seasons. Planting in autumn will be better than planting in spring, planting at this time, it has the advantages of root system can be healed, germination is earlier and robust in the next spring, and the survival rate is relatively high.

1. Soil: sandy soil with sufficient nutrients is more suitable for planting, the pH value requirement is best slightly alkaline, and the drainage performance can not be too bad, so as to ensure good soil conditions in order to be conducive to the later growth.

2. Treat seeds: If you sow in autumn, you don't need to accept any treatment, and you can sow seeds directly. However, if it is sown in the spring, it must be treated before it can be planted.

This can be done by wrapping the seeds in moistened sand or soaking them in warm water at 80 degrees Celsius.

3. Sow the seeds evenly, and plant them when the seedlings grow to a certain extent.

4. After that, carry out normal post-maintenance, and often loosen the soil. If it rains, drain the rain in time.

1. Soil management.

Walnut trees are mostly planted sporadically, the site conditions are poor, and the soil management task is very heavy, and the masses just ignore this aspect of management, so it must be paid great attention to. Young trees should be loosened soil and weeded, and adult trees should be cut and irrigated, reclaimed, ploughed, improved and matured soil, and maintained water and soil.

1. Reclamation and ploughing: If the walnut trees on the hillside are not tended and managed, they will be barren, and the damage of diseases and insects will be serious, the light ones will be weakened, the results will be bad, and the heavy ones will dry up and die.

2. Remove impurities and retain excellence: In the ditches and depressions in the deep mountain areas, there are many bushes and weeds under the walnut tree, which affects the growth and development and yield of walnut trees, cuts down the shrubs and weeds under the trees, increases the nutrient space, and can make the tree grow vigorously.

Second, post-planting management.

After the seedlings are planted, in order to prevent moisture runaway, the tree tray should be mulched. First of all, the ground is leveled, and when the plastic film is laid, the center of the plastic film passes through the center of the seedling, flattened and paved, and then the surrounding and the rhizomes of the seedlings are pressed and compacted with fine soil to prevent the wind from blowing the plastic film and causing water loss. After the germination of young trees, it is necessary to strengthen the management of soil, fertilizer, water and pests and diseases.

3. Fertilizer and water management.

Both fruiting trees and young trees should be watered with budding water once after the soil thaws and before the tree germinates to replenish the water lost in winter and promote the growth of new shoots and the differentiation of flower buds. Watering at this time can also reduce the ground temperature, delay the flowering period, and avoid the damage of late frost.

In the spring before and after the Qingming Festival, the main application of base fertilizer, frost prevention, moisture protection, white to eliminate overwintering pests and diseases, walnut pests and diseases are relatively few, common rot disease, canker disease, inchworm, scale insects and other pests and diseases, early spring to early summer spray stone sulfur mixture or kill pyrethrin.

Fourth, pruning management.

Plastic pruning is an important technical measure in the cultivation and management of walnut trees, especially for young trees, early fruit trees and early fruiting walnut trees. Reasonable shaping and pruning can cultivate a good tree skeleton, improve ventilation and light transmission conditions, regulate and maintain the balanced relationship between vegetative growth and fruiting, reduce pests and diseases, and promote early, abundant and stable yield of walnut trees.

First of all, the temperature should be controlled throughout the year, and the optimal growth temperature should be between 18 and 25 degrees. During the growth period, it is necessary to water and fertilize frequently to ensure the full growth of the pot root system, promote growth and improve the fruit setting rate. Adequate light conditions should be carried out for no less than 7 hours a day.

Prune regularly, prune side branches, and disinfect them.

Walnut trees like a relatively warm environment, and the most suitable growth temperature is between 18-25 degrees, so they must do a good job of thermal insulation and cooling treatment in management. Pay attention to avoid low temperature frost damage, and apply tree generals to keep warm, so as to promote the healthy growth of plants.

During the growth cycle of walnut trees, it is necessary to apply fertilizer and water frequently to ensure a moist environment for potting soil, which is conducive to the absorption of nutrients by the roots to promote the purpose of growth and robustness. Pay attention to the appropriate amount of fertilizer and water each time, not too much, otherwise it will affect the growth of the fruit.

Walnut trees need sufficient light to grow, and can maintain no less than seven hours of sunlight every day, which is conducive to photosynthesis, which not only promotes the verdant branches and leaves, but also improves the fruit setting rate. It can also reduce the occurrence of pests and diseases, which is conducive to root growth.

Walnut trees need to be pruned in the spring, first prune the side branches, leaving 5-6 strong side branches. Pruning off some old dead branches and overlapping branches of cross branches is not only conducive to plant light transmittance, but also greatly reduces excessive nutrient consumption.

Walnut tree management is divided into four seasons of spring, summer, autumn and winter, and the specific operations are as follows:

1. In spring, before and after Qingming, the management of whitening, base fertilizer, watering, pest control, plastic pruning and so on is mainly carried out.

In early spring, the branches are whitened with the "tree guard", and then sprayed on the whole garden, which can not only disinfect, prevent frost, keep warm and eliminate overwintering pests and diseases, but also restore the early awakening of the walnut tree's life system. For the orchard that has not been fertilized in the previous year, it should be applied immediately after the soil thaws, and the orchard should be watered once if there are irrigation conditions after fertilization, and shallow hoeing should be carried out in time to protect moisture.

There are relatively few pests and diseases of walnut, common ones are rot disease, canker disease, beetle, inchworm, scale insect and other pests and diseases, spray 1500 times of killing inulin when the larvae hatch in early spring to early summer, which can control pests such as beetle, inchworm and scale insects. Continue pruning work for orchards that have not been pruned in the previous year.

2. In summer, before and after the summer solstice, pest control, pruning, weeding and composting are mainly carried out.

Summer is the most vigorous period for walnut trees, during which the growth and development of the tree directly affects the formation of the tree, the early and late fruiting and the level of yield. Therefore, it is necessary to increase the top dressing in summer, generally apply 100 to 500 grams of nitrogen fertilizer (urea, ammonium bicarbonate or ammonium sulfate) per young tree, and can use radial, hole-like, furrow-like fertilization, with a depth of 30 cm, and cover with soil after application. At the same time, according to the flowering and fruiting situation of the orchard, top dressing outside the roots before flowering, young fruit stage, and fruit expansion period, spraying foliar fertilizer + "melon and fruit strong Tiling" to protect flowers, strengthen fruits, promote fruit expansion, and prevent fruit dropping.

Pay attention to the prevention and control of pests and diseases in June and July. In addition, pruning is carried out during the growing season, and the stem height is maintained at more than 3m. Do not prune after falling leaves, otherwise it is easy to cause damage and affect the growth of the tree.

In summer, some short-stalk crops such as soybeans, potatoes, melons, peanuts, etc. can be selected for intercropping, and top dressing, irrigation and drainage, loosening soil and weeding can be carried out at the same time to achieve the goal of double harvest of fruit and grain.

3. In autumn and winter, it is mainly managed by cultivating, weeding, plastic pruning, pest control and so on.

The pruning period and main task are carried out after the walnut harvest and before the leaves turn yellow (mid-September to early November), mainly to thin the over-dense branches and shading branches; retract drooping branches; Adjust the structure of the tree skeleton. In addition, autumn pruning promotes strength, suitable for the pruning of weak trees, old trees, and walnut trees on the slopes. The wound caused by pruning is protected with a "callus antiseptic film" to promote wound healing as soon as possible.

4. Winter is the hibernation period of walnut trees, mainly for the management of repairing weirs, watering gardens, and applying base fertilizer.

During the winter dormancy of the tree, the walnut has a wounded flow, so it is not suitable for pruning. Sufficient irrigation before soil freezing, combined with the application of basal fertilizer in autumn, can promote root absorption, increase the accumulation of stored nutrients, and improve the accumulation level of tree body.

The propagation method of walnut trees can be propagated by sowing seeds.

Sowing and propagation in August and September after the fruit is ripe after the seeds, soak them in cold water for 2 3 days after harvesting, bury them in wet sand after fishing, sprinkle water once a day to keep them moist, cover the grass curtain or film moisturizing and keeping warm at night, wait for 10 15 days, and the husk can be sown after cracking. When sowing, sowing should be carried out in batches, and the depth should be 3 5cm from the surface of the soil layer.