The leaves of the kumquat tree are curled and withered, what is the reason

Analysis of the causes of citrus leaf litter.

1. Drought and water shortage.

The first thing we have to think about is that the dead leaves of citrus are too dry, and now that it is winter, the reservoirs have stopped**, and the canals in the countryside have run out of water. At this time, the best fruit trees mainly depend on the weather, and there will be a severe drought if the weather is sunny and does not rain, and the citrus will begin to lack water and burn the leaves, and some leaves will dry up.

2. Excessive circumcision.

In spring, citrus needs to be circumcised before flowering, which is conducive to promoting flower and fruit preservation. However, some fruit farmers will over-cut in order to harvest, which will hurt the vitality of the fruit trees. At first, the fruit trees do not show obvious symptoms, but in autumn and winter, the leaves will turn yellow, and then the leaves will fall off, and all the leaves will dry up and fall off in the later stage.

3. Fertilizer burns roots.

Improper fertilization can also cause leaves to dry out, for example, if the base fertilizer is too close to the roots, it will also burn the roots. The base fertilizer often needs to be fermented, and during the fermentation process, it will be exothermic, and it can easily burn to the roots. When pouring water and fertilizer, it is poured directly under the roots of the tree, which will also cause the fertilizer to burn the roots, and finally the leaves will die.

If this is not the effect of the drug, it may be that the orange tree is sick.

First of all, it is necessary to distinguish whether the inverted low is a physiological disease or a pathogenic disease, and first figure out what causes the leaves to turn yellow. Potted citrus is prone to magnesium deficiency, magnesium deficiency is a kind of micronutrient deficiency, the leaves are yellow but the leaf veins are green, you can go to the field to get some soil, it is best to use the water in the rice field to fully stir and clarify, extract the trace elements of the soil, watering the flowers with such water is the best way to solve the problem of nutrient deficiency. Yellowing and scorching leaves are citrus anthracnose, whether it is anthracnose or other diseases, spray the leaves with 50 carbendazim (broad-spectrum sterilization) 500 times, and treat it every 10 days, but for a single bonsai, this is too extravagant.

If the entire leaf and vein are yellow, it is likely to be citrus huanglongbing, which is very difficult to treat, if the disease is more serious, change it. It may also be less potassium, buy some potassium-containing fertilizers.

In addition, orange trees love water and light. The water should be sufficient, but not waterlogged, and it can be watered thoroughly.

Wilting of orange trees can be the cause of soil discomfort. If the soil is heavy, compact, and not breathable, it will limit the growth of roots, resulting in difficulty breathing, and it will not be able to absorb water and nutrients properly, and it will wilt.

The trunk and branches of the orange tree are withered, right? Is it a lack of water? Is it a severe water shortage? Or are you raising it yourself? Or did the rest of you pour something inside?

The yellowing of the leaves of this tree may be due to too much watering, or the quality of the soil is not very good, or in some cases, it has been eroded by pests and diseases. Pay attention to draining it in normal times, and water it more often in dry weather. If the soil is compacted, it should be loosened.

If insect pests are not controlled in time, the leaves will wilt because there is not enough nutrients and water.

1. Overwatering.

One of the reasons for the dry leaves is probably because of too much watering. If there is too much water in the pot, the leaves will turn yellow and wither. In daily care, it is necessary to pay attention not to be too wet when sprinkling, otherwise the roots will be difficult to breathe and the roots will rot.

The best way is to let the soil dry before watering, so that the roots will grow and the leaves will not dry out. In normal times, it is necessary to pay attention to watering in dry weather and drainage in rainy season, otherwise the boron in the soil will be lost.

Second, the soil quality is not good.

If the quality of the soil where it is planted is not very good and does not meet its needs, it does not have a good environment for growth, and the leaves will dry up. If the soil is compacted, it will be difficult for water to penetrate into the deep layers of the soil, and the roots at the bottom will not be able to absorb water and nutrients, and the leaves will lose water and slowly wither.

At this time, you should use a loosening tool to gently loosen the soil, so that the soil is slightly creviced. Moderate loosening of the soil can make the soil more breathable, the drainage effect will be better, and it will be more beneficial to the growth of leaves. Usually add more livestock urine manure to it, and use some liquid fertilizer every ten days or so to improve the soil quality, increase fertilizer, and ensure that the leaves can get full nutrition.

3. Erosion of pests and diseases.

If it is due to the erosion of pests and diseases, the leaves will also get sick and wilt. You can carefully observe the state of the leaves to see if there are any insect infestations, if there are insects, use insecticides, if there are diseases, use antibiotics and other drugs. If it is not controlled in time, the pest will eat its roots, bite its root bark, and if the nutrients and water cannot be transported to the leaves in time, it will wither.

It is not easy to water too much to avoid the formation of stagnant water, and second, too much fertilization. Solution: Change the soil in time to avoid the fertilizer from burning the roots.

Third, pests and diseases. The solution is to use different pesticides for different pests and diseases. Spider mites can be killed with a diluent treated by mites, and a dilution of stone sulfur mixture can be used to eliminate overwintering larvae.

Anthrax needs to be sprayed with a diluted pesticide with methyl tobuzine wettable powder mixed with water**. Fourth, the temperature is too low. Solution: Ground planting can be warmed by building plastic greenhouses around, and potted plants can be moved into a warm place indoors.

FYI.

Caused by improper watering.

1. Kumquat likes sunlight and warm, humid environment, is not cold-tolerant, slightly shade-tolerant, drought-tolerant, and requires well-drained fertile and loose slightly acidic sandy loam.

2. If the light is insufficient and the environment is shady, it will often cause the branches and leaves to grow and the flowers and fruits will be less. Since kumquat likes cool climate in summer, or the intensity of sunlight in summer, it is better to place it in a slightly shaded place at this time. In winter, the room temperature should not freeze.

If the room temperature is too high and the plant does not fully dormant, the growth will be weakened in the next year, and it is easy to drop flowers and buds.

3. Kumquat likes to be moist but avoids stagnant water, and the potting soil is too wet and easy to rot the roots. Therefore, keep the potting soil moderately moist during the growing period.

Key points of maintenance: 1. Suitable soil.

Kumquat tree has certain requirements for soil, if you want to breed it, then it is best to use loose, fertile and well-drained slightly acidic soil as a cultivation medium, which is most conducive to its vigorous growth, and should not use clay soil and alkaline soil for cultivation, otherwise kumquat trees are prone to poor growth.

2. Sufficient light.

The growth of the kumquat tree needs sufficient light, so when maintaining it daily, it should be placed in a sunny place, so that its leaves will be more green and shiny, and pay attention to avoid the kumquat tree being exposed to strong light in summer, so as to avoid the plant being burned by the light, and the leaves will be yellow and scorched.

3. Temperature requirements.

Kumquat trees like to grow in a warm environment, the optimal temperature is about 25, in summer, you need to cool and ventilate the kumquat tree to avoid it in a sultry environment, in winter, it is best to maintain the kumquat tree in a warm place, so as not to cause it frost damage due to low temperature.

The reasons why the young leaves of the orange tree are curled are:

1. Caused by environmental factors. Such as: drought, low temperature, high temperature, etc.

2. Caused by soil nutrients. Such as: nutrient insufficiency, soil acidity, etc.

3. Invasion of pests and diseases. For example, root nematodes lurk on the root system of orange trees, so that the root system grows small nodules and cannot absorb nutrients.

Strengthen the prevention and control of pests and diseases, and immediately irrigate and kill insects once they are found.

4. Improper use of fertilizers. Such as: blind use of nitrogen fertilizer, etc.

Fertilizers should be used in a balanced manner, organic farm fertilizers should be used as much as possible, and boron, calcium and other fertilizers should be added when using compound element fertilizers.

It's a worm for a lifetime, dicurl leaf virus. All affect the growth, the virus is almost not long, there are insects can see, insecticides, and the virus is spread with detoxification leaves.

Why do kumquats lose their leaves, and why do the branches gradually turn into black dead branches?

The reasons why kumquat loses its leaves and branches turn into black dead branches may be as follows:1Pests and diseases:

Mandarin oranges are susceptible to pests and diseases, such as aphids, powdery mildew, black spot, etc. These pests and diseases will cause kumquat to lose its nutrients, which in turn will lead to leaf loss and branch death. 2.

Growing environment: Kumquat has high requirements for the growth environment, if it lacks nutrients, water, sunlight and other conditions, it will lead to malnutrition and poor growth of kumquat, and then the phenomenon of leaf loss and dead branches will occur. 3.

Over-fertilization: Kumquat does not require much fertilizer, and if it is applied too much, it will lead to damage to the root system, which in turn will lead to leaf loss, dead branches and other phenomena. 4.

Flooding: If the roots of kumquat trees are in a state of flooding for a long time, it will lead to a lack of oxygen in the root system, which will lead to damage to the tree, and there will be leaf loss and dead branches. If kumquat has fallen leaves, dead branches and other phenomena, it is necessary to check its growth environment in time, eliminate the impact of pests and diseases, avoid excessive fertilization and flooding, and take corresponding measures in time to provide it with sufficient nutrients, water and sunlight to promote its healthy growth.

If the condition is more severe, it is recommended to consult a professional for diagnosis and treatment.