Where is the best place to fertilize fruit trees?

For the subject's question, how to fertilize fruit trees correctly? When and where? This question, since the subject did not specify what kind of fruit tree it is, Wei Nong wanted to use his own experience in planting apple trees to ask this question.

The question raised by the subject actually contains two meanings, one is how to fertilize apple trees correctly, including the meaning of applying to ** can be classified into one category; The other is when it's time to fertilize.

Let's first look at how to properly fertilize apple trees, apply them in **? On the question of how to correctly fertilize apple trees, there are many contents, and it is impossible to cover everything in one, so I would like to focus on the location, depth, method and amount of fertilization

One is the location and depth of fertilization of the apple tree. The apple tree is a deep-rooted fruit tree, and the relatively large lateral roots do not absorb nutrients, and the fibrous roots that are responsible for absorbing nutrients are located underground, with an extended crown, about 40 to 60 cm. Therefore, the fertilizer should be applied to the extension of the vertical projection of the canopy, and the depth should be about 40 50 cm.

Because the mouth of these hairy roots that the fruit tree absorbs water and fertilizer is distributed here in large quantities, it is convenient for the apple tree to absorb and utilize the water and fertilizer only by sending water and fertilizer to the mouth of the fruit tree.

Fertilize apple trees should not be too shallow and should not be sprinkled on the surface of the soil. Because the root system of the apple tree has a kind of water and fertilizer, that is, if there is water and fertilizer, the root system of the apple tree will grow wherever it goes. If the fertilization is too shallow, it will guide the root system of the apple tree to grow upward, which will cause the roots to float or be exposed, which is not conducive to the growth of the apple tree and enhance the resistance to stress, and it is also susceptible to frost damage.

Generally speaking, it is better to fertilize a little deeper and farther away, which can guide the root system of fruit trees to continue to grow deep and wide, and can expand the range of nutrients absorbed by the root system. Then for the long-term organic fertilizer or farmhouse fertilizer that has a relatively slow fertilizer effect, it should be applied deeply, and the depth should be 40 50 cm; In the growing season, the top application is generally fast-acting fertilizer, which should be applied shallowly, at 15 20 cm.

The second is the way of fertilization. For those young trees that have not yet borne fruit, they should adopt the method of circular fertilization, dig a circular trench at the periphery of the planting pit to fertilize, and then expand and dig year by year with the increase of tree age and branch extension, so that both fertilization and deep turning of the soil. For fruit trees, inter-row fertilization can be adopted, single or double row ditch fertilization can be adopted, or radial ditch can be excavated for fertilization.

Fertilize around the roots of the tree. Because fruit trees absorb nutrients through their roots, if they are sprayed in the air, they will not be well absorbed.

Personally, I think it's best to apply it to the roots because it absorbs better.

I think it should be spread out as much as possible on the soil surface of the fruit tree, so that it does not lead to overnutrient overgrowth and root rot.

1. Urea and diammonium phosphate are generally applied to fruit trees.

Superphosphate, potassium sulfate.

Organic fertilizer, soil fertilizer and other fertilizers are better. Chemical fertilizers can only play a role in supplementing nutrients for fruit trees, but cannot improve the structure of the soil, if only chemical fertilizers are used for a long time, it will cause the phenomenon of soil compaction, so that the nutrients in the soil are out of balance.

2. When using chemical fertilizer for fruit trees, it should be applied in conjunction with organic fertilizer or soil miscellaneous fertilizer, that is, organic fertilizer or soil miscellaneous fertilizer is the main fertilizer, supplemented by chemical fertilizer (chemical fertilizer can be applied as top dressing, such as fertilizer supplementation during the critical period of growth and development of fruit trees), so that it can have an immediate effect.

3. When the fruit tree has the symptoms of nutrient deficiency, it can be supplemented by more topdressing fertilizer or topdressing outside the roots, but the number of topdressing should be determined according to the growth changes of the fruit tree in the annual cycle, and under normal circumstances, 3-5 times can be topdressed.

soil accumulation fertilization, strip furrow fertilization, annular fertilization, radial furrow fertilization, soil burial fertilization; According to the specific growth of fruit trees, the most suitable nutrients are selected according to the overall environment, and the appropriate fertilization method is selected for fertilization, so as to grow better.

Fertilization can be done by machine, fertilization by manual irrigation, and fertilization by drug sprayers, which are all relatively common fertilization methods. The roots of the fruit tree can be fertilized to ensure better growth.

Artificial fertilization, mechanical fertilization, agricultural aircraft fertilization, annular furrow fertilization, water belt fertilization, the last method is the best, so that the plant can grow better.

Fertilize in the spring at a young age. In the process of planting fruit trees, spring is an important period for their budding, leaf development, and flowering. This period includes the energy of all life activities of the fruit tree and the growth of all parts, and it is very necessary to provide a large amount of nutrients, which is related to whether the fruit tree can grow and develop healthily in the later stage.

So in the spring, it is the first important period for the fruit trees to be fertilized. 2. Fertilization at the beginning of the fruit period in summer. Summer is an important period to promote the differentiation of fruit trees and improve the yield and appearance quality of fruit trees, so it is also very necessary to top dressing in summer.

According to a large number of practices, it has been proved that when topdressing in summer, the fertilizer time with high potassium, low nitrogen and low phosphorus is the most appropriate. And the earlier the topdressing time, the better, which is most beneficial to the growth of fruit trees. 3. Fertilization in autumn during the peak fruit period.

Autumn is an important period for fruit trees to store nutrients, and fertilization has a very important transitional effect on fruit trees at this time. Because if the fruit tree bears too much fruit or has too many insect pests during the growing season, it may cause overnutrition; If the nutrients stored in the tree are not enough to continue budding, flowering and leafing in the following year, the overall yield and quality of the fruit tree will be affected.

After picking the fruit, use organic fertilizer, and use chemical fertilizer for the fruit quickly and for a long time. Fertilize in radial furrows, watering after fertilization.