What nutrients do apple trees need to grow?

Water. Sunlight. Acclimatization of the environment. and individual tree-raising behaviors.

Fertilization points for apple saplings.

The young trees that have not flowered and fruited are in the vegetative growth period, and the growth of roots and new shoots is large, and new shoots are extracted 2 or 3 times a year. Therefore, in fertilization, we should focus on meeting the nutrient needs of tree growth and the extraction and growth of new shoots, so as to promote the formation of a canopy with many branches and leaves as soon as possible to meet the requirements of early flowering and fruiting. The number of fertilization, more generally fertilized 4 5 times a year, mainly combined with the 3 extraction of new shoots, the base fertilizer is applied in September and October, and the top dressing is applied in January.

The types of fertilizers are mainly decomposed manure water and nitrogen fertilizers, with a small amount of phosphorus and potassium fertilizers. This is because young trees are in the nutrient accumulation stage and need more nitrogen fertilizer to enhance vegetative growth, so that more assimilation products can be created and accumulated, laying the foundation for the growth and development of young trees and flowering and fruiting.

The root system of young trees is underdeveloped, in accordance with the principle of "diligent application of light application, less amount of time, first less and then more, first light and then thick", and at the same time increase phosphorus and potassium fertilizer to enhance the tree potential. The time between fertilization should be short, the concentration should be light, the number of times should be more, the amount of fertilizer should be less, and gradually increase and concentrate with the increase of tree age. Generally, 1 2-year-old trees, from the beginning of March to the end of May, apply fast-acting nitrogen fertilizer every 40 50 days, and apply 15 20 kg of manure and urine or 20 30 grams of urea per plant each time to promote the germination and growth of branches and leaves.

From the beginning of June to the end of August, every 40 45 days, apply nitrogen, phosphorus and potassium full fertilizer, and apply 30 40 grams of ternary compound fertilizer to each plant each time to promote the development of branches and mature and full. 3 5-year-old trees, in February and August every two months top dressing, still in the early stage of nitrogen-based, potassium, phosphorus again, in the middle and late application of nitrogen, phosphorus and potassium ternary compound fertilizer, but the amount of fertilizer should increase with the age of the tree year by year. The proportion of nitrogen, phosphorus and potassium applied throughout the year is appropriate.

300 350 times borax is sprayed once a year in April and June to promote its early production. After entering the fourth year of growth, basal fertilizer should be applied to the full ring ditch or half ring ditch hole expansion.

Apples are more sensitive to nitrogen fertilizer, too much nitrogen, easy to grow, delay into the fruiting period, should pay attention to the control of nitrogen fertilizer application according to the tree potential. The amount of fertilization applied to apple saplings is kilograms of pure nitrogen per plant per year, which is equivalent to kilograms of urea. According to Japanese data, the annual application rate of nitrogen, phosphorus and potassium (N, P2O5, K2O) per plant of apple (Guoguang) saplings is kilograms, kilograms, kilograms, which is equivalent to kilograms of urea, kilograms of superphosphate and kilograms of potassium sulfate, which is not much different from the application rate in China.

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<> apple trees need farm fertilizer as well as nitrogen, phosphorus and potassium fertilizers. Apple trees need different fertilizers in different periods, in the flower bud differentiation and young fruit expansion fertilizer stage, potassium fertilizer is the main fertilizer, in the fertilizer application period, farmhouse fertilizer is the main fertilizer, and phosphorus is applied according to the total amount of the year.

When apple fertilization, you can apply farm fertilizer, organic fertilizer, fermented mature farm fertilizer is the high-quality base fertilizer of apple trees, these fertilizers have a longer fertilizer effect, mild fertilizer effect, and more comprehensive nutrients, which can improve the physical and chemical properties of the soil and provide a high-quality environment for fruit growth.

1. Apple trees need to apply germination fertilizer within 5-10 days after the beginning of spring, combined with organic fertilizer and inorganic fertilizer, 30-40 cm away from the main trunk, open a 10-15 cm deep fertilization ditch to apply.

2. In April, the apple tree should be applied for the first time with strong fruit fertilizer, 30 kg of urea, 20 kg of potassium sulfate, and 25 kg of general calcium per mu, and then every 20 days to apply strong fruit fertilizer.

How to fertilize apple trees.

Dig a ditch on both sides of the apple tree, apply the prepared organic fertilizer, and then fill it, don't ditch in the same place every time when ditching, in the direction away from the base of the apple tree, the branch is close to the place where the previous year was ditched and expand the ditch, after several years in a row, the whole orchard can be ditched and fertilized.

Fertilize in the summer. Apple trees can be fertilized in June and July in summer, and the need for phosphorus in fruits starts from the wound flow period, peaks during the vigorous growth period of new shoots and fruit expansion, then decreases, and increases again after harvest.

Fertilize in the fall. It is better for apple trees to be fertilized in mid-October in autumn, and the fruit needs a certain amount of potassium, and the absorption of potassium is relatively stable throughout the annual growth cycle, but the absorption of potassium in the fruit expansion period also increases significantly.

Fertilize in winter. Apple trees are fertilized from November to December in winter, and the top dressing is mainly based on the application of well-rotted human manure or plant ash, urea and other fast-acting fertilizers, and the amount of fertilizer at this time accounts for 20%-30% of the annual fertilizer amount.

Points to note when fertilizing apple trees.

1. Prevent fertilizer damage and root burning: When fertilizing, apple trees need to be flooded with water once, drained immediately after irrigation, sprayed with harm-solving foliar fertilizer to promote new roots, and sprayed again three days later.

2. Prevent yellowing of leaves: In order to prevent yellowing of leaves of apple trees, macronutrients and trace elements can be combined, and inorganic fertilizers and organic fertilizers can be combined to achieve fertilization of all-secret key nutrients.

3. Light requirements: apple trees are light-loving plants, with higher requirements for light, after fertilization, some sunlight should be properly given to the plant, which can promote the rapid absorption of nutrients by the plant and help it grow.

1. Potting soil selection: Use a tile pot with strong air permeability and put it into the soil rich in nutrients. 2. Suitable lighting:

Place the apples in a well-lit area with plenty of sunlight. 3. Apply fertilizer: apply more well-rotted farmhouse fertilizer in the early stage of growth, and apply phosphorus and potassium fertilizer in the later stage.

4. Prune branches and leaves: cut off the yellow, rotten branches and leaves.

1. Potting soil selection

Apple trees have high requirements for soil, so when potting them, they should choose soil with good drainage conditions, loose and breathable, and prepare a tile pot with a large capacity to avoid the phenomenon of insufficient growth space for apple trees in the later stage.

2. Suitable lighting:

Apple trees are suitable for growing in a sunny environment and will only bear fruit in places with more than 8 hours of sunlight, so when cultivating apple trees, they should be placed in a south-facing position to ensure that the plants are exposed to the sun.

3. Apply fertilizer

When cultivating potted apple trees, it is necessary to apply a sufficient amount of fertilizer, mainly rotting farmhouse fertilizer in the early stage of plant growth, phosphate fertilizer and nitrogen fertilizer should be applied during flowering, and foliar fertilizer should be sprayed after fruiting to ensure that the apple tree grows vigorously.

4. Prune branches and leaves

Potted apple trees tend to grow messy branches and leaves, so they need to be pruned during the cultivation process to cut off rotten, yellow, pest-resistant branches and leaves to keep the apple trees in a healthy state.

Apple trees are generally fertilized mainly twice, once in autumn and twice in spring. The fertilization of apple seedlings is relatively simple, and the basal fertilizer adopts organic fertilizer and microbial fertilizer, which can appropriately increase the balanced compound fertilizer and medium and trace elements. After spring, high-nitrogen compound fertilizer or high-nitrogen water-soluble fertilizer can be applied top-dressing, and potassium dihydrogen phosphate can be sprayed on the foliar surface.

The main purpose of fertilization is to promote the root growth of young trees and increase nutrient uptake. The increase of nitrogen fertilizer is mainly to promote the growth of branches and leaves, and increasing photosynthesis will lay a good foundation for future fruit production. There is not much difference between the seedling stage and the full fruiting stage of apple trees, and it is difficult to define the boundaries at one time.

So let's talk about the management plan of apple tree fertilization: after the spring of fruit trees, zinc chelate and calcium ammonium nitrate can be sprayed from January to March to prevent and control microlobular disease. B-ZN foliar fertilizer can be sprayed before flowering, B-Ca foliar fertilizer can be sprayed after flowering, and balanced water-soluble fertilizer can increase fruit yield and basal nutrients, and promote fruit development.

Foliar fertilizer containing calcium and medium and trace elements can be sprayed before and after bagging to prevent the tree from lacking calcium and trace elements such as magnesium, iron, zinc, etc., and increase photosynthesis. During the peak period of fruit trees in June, foliar spraying of potassium dihydrogen phosphate can be increased to prevent yellowing of leaves. In general, water-soluble fertilizers with high nitrogen, high potassium and low phosphorus can be added after July 20, and foliar sprays of trace elements can promote fruit expansion.

After August 20, water-soluble fertilizers with high potassium and high calcium can be sprayed with potassium dihydrogen phosphate or potassium phosphite to continue to increase fruit expansion. After September 15, high-potassium water-soluble fertilizer can be washed once, and foliar sprays of potassium dihydrogen phosphate and chelated calcium can promote fruit ripening, sweetening and coloring. After the fruit is picked, the base fertilizer can be used before freezing, and the base fertilizer is mainly based on trace elements in organic fertilizer and microbial fertilizer.

This is an annual fertilization plan for apple trees, and the fertilization is reasonable. Now that the soil in apple orchards is heavily acidified, it is necessary to adjust to a near-neutral soil according to the pH value to allow the roots to better absorb nutrients.

During the planting cycle, the apple tree is fertilized every week before the apples are ripe, so that the apples can absorb the corresponding nutrients.

Apple trees need to be fertilized four times a year: before the flowering period arrives, the plant needs a lot of nutrients to flower; After flowering, replenish the nutrients consumed by the fruit trees; During the fruit growth period, the nutrients needed for fruit growth and development are supplemented; In early autumn, when fruit trees are growing slowly, fertilization accumulates nutrients for the plants in preparation for winter.

I think in the process of apple tree planting, it is better to apply fertilizer seven or eight times, and we should use some high-quality fertilizer, fertilize them, and we must control the corresponding time, and timely clean up the surrounding pests and other harmful substances, to control the indoor temperature, to give the apple tree a high-quality environment.

Suitable soil for growing apples:

Apples are able to adapt to most climates. Between 35-50 degrees north and south latitude is the best choice for apple growth. Apples require 1000-1600 units of heat and 120-180 days of frost-free weather.

Warm days, cold nights, and as much light radiation as possible are the prerequisites for excellent quality. Apples are resistant to frosts as low as minus 40°C. Flowering and fruiting, if the temperature is between to, will affect the yield.

Apples bloom later than other deciduous crops. As a result, the probability of suffering from frost is reduced. However, for some species and regions, where the effects of frost are more pronounced, an effective frost resistance system is necessary.

Best for pH, neutral, well-drained soils.

Fertilization of apple trees:

Pre-flowering or budding fertilizer (early April).

Post-flowering fertilizer (mid-May). These two fertilizers can effectively promote germination and flowering, prevent defertilization due to flowering and consume a lot of nutrients in time, improve fruit setting rate, and promote the growth of new branches.

Flower bud differentiation and young fruit enlargement (late May to early June). The top dressing is to meet the needs of fruit expansion, branch and leaf growth and flower bud differentiation. Potassium fertilizer was the main fertilization.

Potted apple trees should be planted in soil with good air permeability and flower pots, and the pots should be as large as possible, because they have a well-developed root system and grow relatively quickly.

Then there is the light, its growth needs full sunlight, pruning is also essential, its branches are also relatively developed, in order to achieve a higher ornamentality, it is necessary to prune it frequently, cut off too dense and too long branches, control its growth and height of the offspring.

Bonsai apple tree precautions.

The planted apple tree seedlings must be strong, free from pests and diseases, and full of buds on the branches, so that the seedlings can adapt to the new environment and resume growth more quickly after planting.

It is usually planted in mid-April in the spring, and the roots of the apple tree are soaked with diluted buried stone sulfur mixture, and the dead roots, rotten roots, etc., are cut off, and then planted in pots. It needs to be watered thoroughly immediately after planting to allow it to absorb enough water and resume growth as soon as possible.