The walnut tree has already borne fruit, and the weather has frozen a lot, how to remedy it? Urgent!

The agriculture of the field depends on the weather for food, and your walnuts are frozen, and there are not many remedies. This thing is like your hand, it is burned, you have to remove the scar, the cost is higher, the effect is not ideal, the best thing to do is to stay away from the thing that can burn you. Agriculture depends on experience, so this thing teaches you a lesson, always pay attention to the weather dynamics, and take precautions.

Let's get back to the point: frost damage is relatively common in fruit tree production, and there is no agent that says that as long as you spray it, you can restore the frozen fruit to its original state. What you have to do is accept this fact and then take care of the good fruit that exists now.

1. After frost damage, there will be fruits and young shoots damaged, you have to give up these, the damaged branches should be thinned, the damaged fruits should be removed, the principle of abandonment is to maintain the tree structure and yield to the greatest extent, for example, the stronger tree can be cut off with the weaker branches of the frost, and the results are more, you can not freeze the lighter fruits, the specific situation is combined with your actual situation and your personal wishes.

2. Frozen injured branches and fruits are easy to breed diseases and should be sterilized and prevented.

3. Find a way to restore the tree's momentum as soon as possible, if you give up and ignore him, it will cause the existing good fruits to fall.

After a severe winter, some seedlings were affected by frost damage and damage to varying degrees, and the temperature gradually rose when spring came, but the activity of frozen seedlings recovered slowly. Here, Zhongwei Happy Forest collects some spring management and maintenance measures for frozen seedlings, hoping to help the majority of garden partners.

1. Strengthen water and fertilizer management Frozen trees generally show poor growth. Therefore, fertilizer and water management should be strengthened in early spring to ensure that it has sufficient fertilizer and water**. Mulching, weeds, and straw can be used to protect moisture, combined with early topdressing and extra-root spraying to replenish nutrients.

Second, the spring re-cutting should be late. Some trees change color when they are frozen, but some of the cambium still survives. As a result, new young tissues may merige and resume growth in spring.

For these trees and branches, it is not advisable to sawn off too early. For the obvious frozen dead part, it can be cut off in time to facilitate wound healing.

3. Timely frostbite wounds. For frostbite wounds, it is necessary to apply a cheerful callus ointment to prevent infection with rot and other diseases. At the same time, it is best to spray a whitening agent such as a happy forest to prevent sunburn and do a good job in the prevention and control of pests and diseases.

Fourth, the roots and necks of frozen trees should be bridged in time The seedlings whose bark is frozen into pieces and separated from the xylem should be nailed with nails or bridged for remediation. For trees whose trunk cortex is frozen and cracked, old cotton wool and plastic sheeting can also be used to wrap wounds to promote wound healing and reduce the death of frozen trees.

5. Early mulching After the seedlings are watered, loosened and fertilized, they should be covered with mulch film immediately to increase the ground temperature and maintain the soil temperature. This is not only conducive to the activity of soil microorganisms, but also can promote the germination of new shoots of seedlings, so that the injury can be recovered as soon as possible and grow normally.

6. Spraying Kuaihuolin antifreeze and Chunyu No. 1 can timely alleviate the degree of frost damage of seedlings, restore the activity of tree cells, kill ice nucleus bacteria, destroy the ice-forming activity of frozen proteins, increase heat and promote growth. Make sure that by the "early spring February" can be vigorous and thriving.

According to practical experience, walnut is a warmer tree species, and its seedlings and large trees are suitable for growing at an average annual temperature of 8-15, and the extreme minimum temperature is not less than -30. Fruit trees can be whitened under -20 conditions, but there are still relatively few people who use this method in my hometown, and I rarely see it, so if this winter is colder than last year, you can consider doing this, because our family didn't do it last year.

Fertilization, combined with the deep turning of the soil for basal fertilizer, the basal fertilizer is mainly organic fertilizer. Fertilization was carried out according to the walnut yield, site conditions, and the nutritional status of the tree. Generally, 5000 grams of organic fertilizer are applied for every 1000 grams of walnuts produced.

Mix an appropriate amount of phosphorus and potassium fertilizer. The trunk of each young tree is 20-30 kg, painted white. Trunk whitening is usually done in early November.

The composition of the whitening agent varies slightly from place to place, and can be adjusted according to the actual local situation. Generally, the commonly used whitening agent formula is: 10 parts of quicklime, 30 parts of water, 1 part of salt, and 1 part of adhesive (such as clay, grease, etc.).

For 1 2-year-old young trees that cannot safely overwinter in the open field, the whole tree body is bent to one side and covered with soil, which is the most effective and reliable measure to prevent and control stripping. For stubby walnut seedlings, if it is not easy to bend, soil can be cultivated around the trunk, and it is best to bury the current year's branches tightly. Taller young trees should not use this method.

The tree body is higher and can not be bent, so you can use a woven bag to coat it, and fill the middle of the bag to prevent cold.

For newly planted young trees without branches, a small mound of 10-20 cm high is piled at the base of the trunk before the soil freezes, and then the seedlings are bent down on the mound, and then buried with moist fine soil with a thickness of 20-25 cm, and the seedlings are dug up before germination after thawing in the spring of the second year. Walnut likes moisture, is waterloggiving, and has weak drought resistance, so watering is an effective measure to increase yield. Water should be done in time during all periods of winter drought.

Before wintering, after the leaves are shed, the stems and trunks of the trees are sprayed with a stone sulfur mixture.

After freezing, it should be managed in time, apply more fertilizer to it, and spray it with more potassium fertilizer, so that its body resistance will be particularly good, and it will grow better in the future.

The temperature should be maintained, and care should be taken to prune the stumps, then immediately water and fertilize, and snow or weeds should also be removed, and then the trunk should be whitened with some white paint.

Walnuts fall fruit for a variety of reasons.

Pests, diseases, fertilizers, low temperatures, etc., can cause walnuts to fall fruit.

The solution to walnut fruit drop.

Pruning treatment When preventing walnut tree fruit drop, it is necessary to prepare sharp scissors that have been sterilized to cut the branches and leaves that are too densely grown, improve the light transmittance and ventilation between walnut trees, so that they can grow healthily, and cut the branches of walnut trees that are too long to concentrate their nutrients.

Spraying pesticides when breeding walnut trees, it is necessary to regularly observe the growth state of the plant, if it is found that the walnut tree is infected with disease, it is necessary to immediately cut off the branches and fruits of the infected plant, so as not to make the situation more serious, and to spray 1-2 times of fungicide to the walnut tree to maintain its normal growth and sell the forest.

Fertilization management Walnut trees need sufficient nutrients in the growth process, when breeding walnut trees, it is necessary to apply 1-2 times of potassium dihydrogen phosphate in fertile leaves during the growth period of the plant, so that its growth rate is accelerated, and after the walnut tree bears fruit, it is necessary to spray potassium dihydrogen phosphate or urea on its leaves.

Drain stagnant water Walnut trees are not tolerant to waterlogging, when breeding walnut trees, if the rainfall is too large, it will cause the plant to rot the roots, which makes the fruit of the walnut tree black, it is necessary to dig a drainage ditch for the walnut tree during the rainy season, so that the stagnant water is quickly discharged from the soil, and promote the vigorous growth of walnut trees.

Walnut fruit drop should pay attention to scientific management, windbreak afforestation, and appropriate leaf picking.

First, do a good job in scientific management.

In order to reduce the occurrence of walnut fruit drop, first of all, it is necessary to carry out more scientific and standardized management of the cultivation of fruit trees, and we must pay attention to the density of planting in the process of fruit tree planting.

For permanent trees, it is necessary to analyze from a long-term perspective and cultivate the canopy well; For temporary trees, it is necessary to clarify the growth period, try to advance the fruiting time of fruit trees, and remove them when they have an impact on the fruiting of permanent trees.

Secondly, we should do a good job in crown control, the management work will be more refined, strictly do a good job in crown control measures, reasonable watering and fertilization, top dressing can be selected with Ribery Yanwo water-soluble fertilizer, can not be blindly fertilized, control the height of the trunk and the thickness of the branches, in the hot summer need to put more and less cut, comb the upper end of the competitive branches, promote its positive and clear noise early fruit, to achieve the purpose of fruit tree crown control.

2. Windbreak afforestation.

Reduce the impact of the wind environment on walnut trees, pay attention to windbreak afforestation, weaken the wind in the storm-prone season, slow down the wind speed, reduce wind damage, and also reduce the evaporation of soil moisture, moisturize moisture, increase the humidity and temperature of the air, and combine the structure of the forest belt, try to choose the combination of wind forest belt and trees and shrubs under the condition of conditions, of course, the selection of tree species also needs to combine efforts, can not image the growth of walnut trees, and the spacing between the forest belt and walnut trees needs to have enough distance.

3. Leaf picking. Leaf picking is generally carried out in spring, and proper leaf removal can greatly reduce the transpiration of leaves, help leaves lock in water, reduce the loss of nutrients from plants, improve the fruit setting rate of walnuts, reduce the occurrence of flower drop, and thus increase walnut yield.

Anti-falling spirits. If you want to reduce the occurrence of walnut fruit drop, you need to carry out more scientific and standardized management of the cultivation of fruit trees, and you must pay attention to the density of planting in the process of fruit tree planting.

For permanent trees, it is necessary to analyze from a long-term perspective, cultivate the canopy, and for temporary trees, it is necessary to clarify the growth years, try to make the fruit trees bear fruit earlier, and remove them when they have an impact on the fruit of permanent trees.

Secondly, it is necessary to do a good job in crown control, make the management work more refined, strictly do a good job in crown control measures, carry out reasonable watering and fertilization, do not blindly fertilize, control the height of the trunk and the thickness of the branches, and in the hot summer, it is necessary to put more and cut less, and thin the upper end of the competitive branches, so as to promote its early fruiting and achieve the purpose of crown control of fruit trees.

Measures to improve fruit set rate of walnuts:

1. Reasonable fertilization and watering, watering before germination, and topdressing nitrogen fertilizer.

2. Potassium dihydrogen phosphate added to borax sprayed during flowering.

3. When the male spike grows to 1 cm, 95% is thinned, which is equivalent to reverse fertilization and watering, and the effect is also obvious.

4. Reasonable matching of pollination trees, and artificial pollination is carried out when pollination trees are insufficient.

A small amount of fruit drop in walnut trees is a normal manifestation of the growth process, and there are many reasons for fruit drop, which may be insufficient nutrients, lack of trace elements, and excessive use of nitrogen fertilizer. Usually walnut trees can still live, need to be fertilized in time, generally in spring and autumn each topdressing ridge leakage 1 time, top dressing soil fertilizer, should also be topdressing containing nitrogen, phosphorus and potassium compound fertilizer, before and after flowering to the foliar spray Shuofeng 481 and available boron, each spray 1 2 times.

Causes of fruit drop in walnut trees.

A small amount of fruit drop in walnut trees is a normal manifestation of the growth process, and there are many reasons for fruit drop, which may be caused by improper selection of cherry blossoms, low temperature during flowering, insufficient nutrients, or lack of trace elements, excessive use of nitrogen fertilizer or partial application of nitrogen fertilizer.

Walnut tree fruit drop treatment method.

Walnut tree fruit drop can still live, walnut tree needs to be topdressed in time after fruit dropping, generally in spring and autumn each top dressing 1 time, top dressing soil miscellaneous fertilizer, should also be topdressing containing nitrogen, phosphorus and potassium compound fertilizer, before and after flowering to the foliar spray Shuofeng 481 and available boron, each spray 1 2 times.

Walnut trees prevent fruit drop.

Disease preventionWalnut tree to prevent fruit drop should be carried out disease prevention and control, the main diseases are walnut black spot and walnut anthracnose, etc., can be sprayed 1 time before germination, spray Bordeaux liquid before and after flowering, spray once every 20 days or so, spray 2 3 times in a row.

Pest controlStrengthen the management of the park, ensure the healthy growth of walnut trees, improve the ability of walnut trees to resist diseases and insects, when picking walnuts, cut off the branches with diseases and insects, and then destroy them in a centralized manner away from the walnut orchard.

1. Pruning: To prevent walnut tree fruit drop, it is necessary to cut and thin the branches and leaves that are too densely grown. 2. Spraying:

Spray the walnut tree with 1-2 times of fungicide to make it grow healthily. 3. Fertilization: Apply 1-2 times of phosphate and potassium fertilizer to walnut trees to improve the fruit setting rate.

4. Drainage: Drain stagnant water for walnut trees in time in the rainy season to avoid root rot.

1. Pruning

When preventing and controlling walnut tree fruit drop, it is necessary to prepare sharp scissors that have been sterilized to cut the branches and leaves that are too densely grown, improve the light transmittance and ventilation between walnut trees, so that they can grow healthily, and cut the branches of walnut trees that grow too long to make them concentrate nutrients.

2. Spray the agent

When breeding walnut trees, it is necessary to regularly observe the growth state of the plant, if the walnut tree is found to be infected with disease, it is necessary to immediately cut off the diseased branches and fruits of the plant, so as not to make the situation more serious, and to spray the walnut tree 1-2 times of fungicide to maintain its normal growth.

3. Fertilization management

Walnut trees need sufficient nutrients in the growth process, when breeding walnut trees, it is necessary to apply 1-2 times of phosphorus and potassium fertilizer during the plant growth period to speed up its growth rate, and after the walnut tree bears fruit, it is necessary to spray potassium dihydrogen phosphate or urea on its leaves.

4. Drain stagnant water

Walnut trees are not tolerant to waterlogging, when breeding walnut trees, if the rainfall is too large, it will cause the plant to rot the roots, so that the fruit of the walnut tree is black, and it is necessary to dig a drainage ditch for the walnut tree during the rainy season, so that the stagnant water is quickly discharged from the soil and promote the vigorous growth of walnut trees.