The walnut tree has been growing for three years, and it is growing very well, but it is not fruitfu

It is related to seedlings. Most of the walnut seedlings cultivated today are grafted seedlings, but there are also seeded seedlings on the market. The fruiting age of the two seedlings is very different, and the second flowering and fruiting of the grafted seedlings is the earliest, and a small amount of fruit is borne in the third year. Walnut trees that are sown with seedlings do not bear fruit until 8-10 years old.

If it does not bear fruit for three years, it is possible to cultivate walnut trees that are seedlings of fruit.

If it does not bear fruit, it is likely that the plant lacks nutrients, and the plant should be supplemented with an appropriate amount of organic fertilizer. It is also rich in nutrients and can promote the growth of plant rhizomes.

1. Pruning: Cut off the dense branches and leaves to provide nutrients and growth space for the fruit. 2. Correct fertilization:

Less nitrogen fertilizer and more phosphorus, potassium fertilizer and microbial fertilizer. 3. Replenish water: water more during the growth period to improve the fruit setting rate.

4. Suitable light: let the walnut tree bask in more sunlight to promote the differentiation of flower buds and improve fruit yield.

1. Prune

Walnut trees are resistant to pruning, in the process of cultivation must be thinned on the dense branches and leaves, improve the ventilation between the canopy, reduce the consumption of nutrients, so that the fruit growth has sufficient nutrients and space, pay attention to the walnut pruning in autumn, which is conducive to wound healing.

2. Correct fertilization:

In order to improve the yield of walnut trees, a large amount of nitrogen fertilizer will be applied, which will lead to the crazy growth of branches and leaves, when fertilizing walnut trees during the flowering period, less nitrogen fertilizer should be applied, and more phosphorus and potassium fertilizers and microbial fertilizers should be applied, so that the fruit growth has a balanced Yingchang service.

3. Replenish water

Walnut trees like to grow in a humid environment, if there is drought and lack of water during the growth period, it will lead to fruit setting rate and insufficient kernel development, so when breeding walnut trees, it is necessary to irrigate more water into the soil, but in the rainy season to tolerate orange noise and discharge stagnant water.

4. The light is suitable

Walnut trees in the environment of insufficient light, branches and leaves will continue to grow, resulting in flower buds difficult to differentiate, the phenomenon of not bearing fruit, in the process of breeding walnut trees, to provide suitable light for them, 6-8 hours a day.

The site conditions are poor and the management is extensive. Walnut trees are planted in poor conditions, thin soil layer, poor soil, let the tree grow, without management, resulting in long-term insufficient tree nutrition, weak branches, no flower buds, no fruit.

Excessive application of nitrogen fertilizer, and no lack of water, make the tree body vigorous, the branches are many and dense, the ventilation and light transmission conditions are poor, and the short and medium branches that do not bear fruit do not bear fruit. Some in order to plant crops under the tree, the branches under the canopy of walnut are trimmed, and the number of branches in the whole crown is too small and most of them are long branches, the tree posture is upright, and the tree or the destruction of the strong and weak at the bottom, and can not form fruiting branches.

Appropriate amount of fertilizer: The amount of fertilizer needs to be combined with the growth of walnut trees and the objective problems of the soil, so as to determine the variety and quantity of fertilizer. The correct selection of fertilizer types plays a very important role in the growth of walnut trees, and the selection of appropriate fertilizer varieties plays a very important role in improving the quality and quantity of walnuts.

The management work is generally carried out during the growth period of walnut planting, and the growth of walnut trees at each stage is monitored in real time, so as to take timely management measures for problems. Before planting, learn the corresponding planting techniques, testing techniques and control methods, so as to promote the good growth of walnut trees.

1. It shows that there is still a problem with the seedlings, or a fake grafted seedling, or a "rootstock" grafting.

2. Truly qualified grafted seedlings, early fruit varieties can see the fruit when digging the year, and the second year can bear fruit with scattered suspicion; Late-fruiting varieties can also bear fruit in the second to third year. By the 8th year, as long as it is a real grafted seedling, it should enter the harvest period.

3. It is recommended to change the head and graft as soon as possible.

Why do walnut trees bear fruit late? There are mainly the following reasons.

First: the walnut variety itself belongs to the late fruiting walnut that is a very late fruiting variety, it must reach a year of years with fruiting conditions, the formation of flower buds will bear fruit, this is a late fruiting variety, the crown is very large, the general tree height is 10-20m, for the tall deciduous tree, the crown is large, long life. The crown bark is gray, and the fruit is generally in the annual bark, and the yield is very low, even if it enters the harvest period, the yield is about 150-200 catties per acre.

Moreover, the skin of the fruit is very thick, and if you use your hand, you can't pinch it at all, you need to use tongs to open it, and there are a lot of clamps.

Walnut is a late fruiting peach, and it has not been grafted, which is the so-called real seedling, and the real seedling is the seedling that grows directly from the pecan or stupid walnut. When choosing seedlings, we must be cautious, look at the variety, and Huaiqiao will decide after looking at the seedlings. Choose carefully.

3. Poor management, serious pests and diseases, and lack of soil nutrients will also cause walnuts to bear fruit late.

Walnuts are late-fruiting walnuts and have not been grafted, which is the so-called seedlings, and the seedlings are the seedlings that grow directly from pecans or stupid walnuts. Therefore, we must be cautious when choosing seedlings, look at the varieties, and then decide on the seedlings. Choose carefully.

3. Poor management, serious pests and diseases, lack of soil nutrients, etc. will also cause walnuts to bear fruit late before Generally speaking, walnut seedlings belong to lazy trees, simple management, but it is not that there is no need to do any work, generally speaking, the second year needs to be dry, shaped, and the tree shape is set out, and the yield will be higher after the finger period. Water twice a year: essential, return to green water and winter water, twice fertilization, farmhouse fertilizer or compound fertilizer.

If there are pests and diseases, they need to be sprayed, and there can be no pests or diseases, and they should not be sprayed. Poor management will also cause low walnut yield or walnut growth and late fruiting. Therefore, although walnuts belong to the lazy tree, the management still has to keep up.

1. Improper selection of varieties.

Walnut varieties have early and late varieties, generally early fruit bearing 3-5 years after planting, late varieties need 6-10 years after planting to hang fruit normally. If the walnut tree does not bear fruit, it may be a late variety.

2. Poor pollination and fertilization during flowering.

If the walnut flower period encounters continuous rain, low temperature weather or strong wind during the pollination period, it will aggravate the problem that the walnut female flowers can not be purified locust pollination or poor pollination and fertilization quality, resulting in the phenomenon that walnuts can not bloom normally and sit on fruits, flowers but not fruits, no flowers and no fruits, and fall into the phenomenon of cautious flowers and fruits.

3. Extensive management.

Some growers do not care about walnut planting after planting, or the management is extensive, such as the planting plot is not transparent to the shade, the * layer is shallow, the fertility is insufficient, the ridge is slow or the nitrogen fertilizer is used too much, the amount of watering is large, and the pruning is not pruned, etc., which will disturb the malnutrition of walnut late peach, the fruit tree is vigorous or the branches and leaves are long, and the ventilation and light transmission environment is poor, resulting in the phenomenon that walnut only grows branches and leaves, does not flower, does not bear fruit or falls flowers and fruits.

4. Pest and disease hazards.

1. Improper variety selection walnut varieties have morning and evening varieties, generally 3-5 years after planting early fruits, and it takes 6-10 years to hang fruit normally after planting late varieties. If the walnut tree does not bear fruit, it may be a late variety. 2. Poor pollination and fertilization during the flowering period If the walnut flower period encounters continuous rain, low temperature weather or strong wind during the pollination period, it will aggravate the problem that the walnut female flowers cannot be pollinated or the pollination and fertilization quality is poor, resulting in the phenomenon that walnut can not flower and set fruit normally, flowers but not fruits, no flowers and no fruits, and flowers and fruits.

3. Extensive management Some growers do not care after walnut planting, or the management is extensive, such as the planting plot is not transparent to light, the * layer is shallow, the fertility is insufficient, or the nitrogen fertilizer is used too much, the amount of watering is large, and the pruning is not pruned, etc., which will cause walnut nutrition not to refer to the potato good, fruit trees are vigorous or the branches and leaves are long, and the ventilation and light environment is poor, resulting in walnuts only grow branches and leaves, do not flower, do not bear fruit or the phenomenon of plum flowers and fruits. 4. Pests and diseases harm walnut trees If there are serious pests and diseases, such as more flower buds and maggots, and female flowers are eaten by maggots, then it will also lead to walnut trees not bearing fruit in the later stage.

The planted walnut tree does not bear fruit, which may be due to improper pollination that causes the plant to not be fertilized smoothly, or it may be that in the process of maintenance, the water and nutrients provided for the source of the plant do not attack the cover state, resulting in the inability of the plant to grow normally, or it may be that the walnut tree suffers from disease in the process of growth and cannot bear fruit smoothly.

Summary. <>

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The reason why walnut trees do not bear fruit is the problem of fertilization, because there is more urea and less phosphorus and potassium fertilizer, so it is recommended to apply more phosphorus and potassium fertilizer and human and animal manure. Improper pollination may lead to the failure of the plant to fertilize smoothly, or in the process of maintenance, improper water and nutrients provided to it, resulting in the failure of the plant to grow normally, or it may be that the walnut tree suffers from disease in the process of growth and cannot bear fruit smoothly.

What are the reasons why walnut trees do not bear fruit.

Dear, it's a great pleasure to answer your <>

The problem of fertilization is caused by more urea and less phosphorus and potassium fertilizer, so it is recommended to apply more phosphorus and potassium fertilizer and human and animal manure. Improper pollination may lead to the failure of the plant to fertilize smoothly, or in the process of maintenance, the water and nutrients provided to it are improper, resulting in the plant can not grow normally, or it may be that the walnut tree suffers from disease and scattered rock in the process of growth, and cannot bear fruit smoothly.

Extended information: Walnut tree, also known as walnut tree, belongs to the walnut family, and the varieties are divided into wild pecans and artificially grafted improved varieties of walnut. Native to Central Asia, it is cultivated all over China, and it is generally chosen to plant artificially improved varieties, because the improved varieties have higher yields than wild varieties and have thin shells, commonly known as pickled walnuts.

The wild shell is thick, large, oily and other characteristics, and it tastes more fragrant, commonly known as iron walnut. Walnut trees can be used as shelterbelts for road greening; Due to its toughness and elasticity, wood is also a superior material used in industry; Walnut shells can be processed into works of art. Walnuts, along with almonds, cashews and hazelnuts, are known as the "four major nuts" in the international market.

Walnut trees are adapted to the ecological environment of deep, loose, fertile, moist and warm climate. The main ways to improve the soil conditions of Huipei are deep ploughing, soil and water conservation, and weeding in tillage. Each deep renovation and alteration of the cavity and the remaining soil should be spaced between one year or half a year.

The amount of fertilizer needs to be combined with the growth of walnut trees and the objective problems of the soil, so as to determine the variety and quantity of fertilizer. The correct selection of fertilizer types plays a very important role in the growth of walnut trees, and the selection of appropriate fertilizer varieties plays an important role in improving the quality and quantity of walnuts.