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The leaves of the bonsai banyan tree are yellow and dry, which may be sunburned by too much sunlight.
leaves caused by shading in summer and avoiding sunlight.
Direct sunlight. It may also be caused by too much watering and wet root rot, to control the amount of water, the stagnant water should be ventilated and drained. It can also be caused by excessive fertilization, arrowroot.
Thin fertilizer is applied frequently, and excessive fertilizer should be watered to dilute the fertilizer. Or it may be caused by infection, cut off the yellow leaves, spray the drug, and pay attention to keep the ventilation.
First, the light is too strong.
Reason: The leaves of the bonsai banyan tree are yellow and dry, probably because of the light, although it has a demand for light, and needs sufficient sunlight in its growth, but it can not withstand the strong light of the sun. The light in summer is very strong, and if it is not blocked, direct exposure to the scorching sun will cause the leaves to be sunburned, and the water will be lost, and the leaves will turn yellow and dry.
Solution: Give good sunlight during the growing season, and do a good job of shading in summer to avoid direct sunlight.
2. Watering too much.
Reason: If you water too much during maintenance, a large amount of water will accumulate to the roots, causing moisture, resulting in rotten roots, and the leaves will turn yellow and dry.
Solution: In the growth and maintenance, we should pay attention to reasonable watering, control the amount of watering, and ventilate and drain water if there is stagnant water.
3. Excessive fertilization.
Reason: Reasonable fertilization can promote the growth of banyan trees, once excessive fertilization, it will burn the roots, causing the leaves to turn yellow and dry.
Solution: Apply thin fertilizer frequently during the growing period, if the fertilizer is excessive, the fertilizer should be stopped, and a large amount of water should be used to dilute the fertilizer.
Fourth, infected diseases.
Cause: Due to improper maintenance, it may cause the banyan tree to be infected with diseases and infect the leaves, causing the leaves to be yellow and dry.
Solution: Cut off the yellow leaves, spray with drugs, and keep the ventilation well.
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If the new shoots of the banyan tree are always dry, it is related to the sun exposure, because the new leaves are relatively tender, and if the sun is exposed, the leaves are easy to dry.
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This situation is usually caused by a problem with the roots, and you are not fertilizing too much.
It is important to burn the leaves after fertilization, especially the new leaves, and the old leaves should also be dropped.
If so, it is recommended that the landlord quickly change the soil, and now there is still salvation, if you don't care about him.
When the branches are dry, there will be no salvation.
If it's not a fertilization problem, please send me a letter from the landlord, I can't see the problem of supplementation.
I can't answer you.
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The occurrence of such symptoms in banyan trees is not caused by strong winds, but by lack of light, pests and diseases. In Yu.
It is also common in closed environments, and if you are giving good ventilation, you should rule out this possibility.
Banyan is a strong positive species, which is not shade tolerant and can be enjoyed in shade for a short period of time, but it can have serious health effects.
Adequate light and proper ventilation should be given for good growth.
Don't water too often, just water thoroughly after the surface of the potting soil is dry, and don't water "half water" for a long time.
If the branches have sucking pests scale insects, stem borer pests such as beetle, codling moths, borers, and termite pests, some branches will dry up. This needs to be prevented and controlled in time, and scale insects need to be sprayed with special pesticides for control, such as chlorpyrifos, chlorpyrifos, etc.; Dried borer pests can be injected into the cavity with dichlorvos and phosphine original drug liquid, and then plugged with yellow mud. It can also be combined with the spraying of phosphine or other pyrethroid agents for prevention and control.
Dry branches can now be cut off and destroyed. The rest will sprout new branches, which are strong and resistant to pruning.
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First, the reason for the budding of leaves:
1. Lack of water. 2. Root damage.
3. The tree disc leaks air and the branches die.
4. Seedlings with disease.
5. Newly planted seedlings are seriously infested.
2. Remedial measures.
1. Water-deficient seedlings should be watered, especially for trees planted on the embankment with deep groundwater level, more watering should be done to keep the water holding capacity in the field reaching 60% 70%, and then watered 1-2 times before the arrival of the wheat harvest rainy season.
2. Hoeing and loosening the soil frequently. For the shallow groundwater level, the amount of water in spring watering is sufficient, more plots, especially the depression to implement flood irrigation, to hoe diligently, so that the roots are in the appropriate water-holding range, improve the ground temperature, and promote the roots to grow more roots and grow roots quickly.
3. Remove diseased and disabled seedlings. At present, it has been found that the seedlings with rotten skin bacteria are harmed, and they should be removed in time and transported to a distant place to be burned. Disinfectants are sprayed at the planting site to eliminate pathogenic bacteria, prevent the spread of germs, and lay a good foundation for replanting in the coming year.
4. Spray pesticides in time to prevent insect pests. For the occurrence of leaf-eating pests, such as inchworms, dance moths, etc., spraying and control.
5. Do a good job in the replanting plan. For the areas where the lack of seedlings is serious, it is necessary to draw lessons, select suitable afforestation tree species in planning, pay attention to planting technology, and adjust the presence of healthy seedlings with no diseases and insects, full buds, and sufficient water content. Do a good job of ground sterilization.
Saline-alkali areas should do a good job in alkali isolation projects, and do not use water with large salt content to irrigate.
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On the balcony, we are in the south and the temperature is quite high, the balcony is very steaming, is the sun too strong.
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Banyan bonsai is a modeling landscape with a symbol of vitality, so maintaining the continuation of its life growth has become the inevitable purpose of maintenance and management. It must be watered, fertilized, pruned, pest control, etc., in routine maintenance. Banyan bonsai should generally be placed in a ventilated and light-transmitting place, with a certain amount of space humidity, insufficient sunlight, poor ventilation, and no certain space humidity, which can make the plants yellow and dry, resulting in the occurrence of pests and diseases, until death.
Banyan trees are mainly distributed in the south of our country, the main commodity production area of Zhangzhou, Fujian, like acidic soil, is a non-cold-tolerant plant, in the northern region, generally winter to enter the greenhouse maintenance management. There are many reasons why banyan trees lose their leaves. (1) Humidity and moisture:
Improper moisture is very harmful to the banyan tree. According to the condition of the potting soil felt by hand, the principle of "seeing dry and wet" should be adopted. Don't water too often, do it thoroughly.
Too much watering can cause rot of the root system, causing it to lose its leaves. Banyan trees are more difficult to maintain in the north, and families should spray more foliar water to increase the humidity around their air. (2) Temperature:
The suitable growth temperature of the banyan tree should not be too large day and night, (10 degrees apart) is very easy to fall and die. Usually pay attention to the place of light and light, and pay attention to proper shade in summer. (3) Cultivation soil:
The use of loose, good water saprophylaxis, the usual ratio of garden soil: humus soil: sand 2:
2:1。It is best to place moss on the top of the bonsai that is consistent with the size of the pot, which is beautiful and has a good effect on drainage and ventilation.
4) Fertilizer: The growth of banyan trees likes fertilizer, but the number of fertilization times will cause harm to the growth of banyan trees. The amount of fertilizer applied should also vary depending on the season.
Now is the winter, and it is better to fertilize less or no fertiliser. Fertilizer is mastered for the water between the bean cakes. or chemical fertilizers based on nitrogen fertilizers.
5) Diseases and insect pests: Root damage or decay is also easy to fall leaves, but it is difficult to detect because the root system grows in the soil. Due to the long-term non-repotting or improper fertilizer and water caused by rotten roots are very common, it is best to check the roots without hurting the roots, and properly prune the dead, weak, and injured roots.
Dip it in growth agent and implant it in a pot. In addition, the roots of the banyan tree are prone to root rot or rhizobia caused by various bacteria and fungi, so proper attention should be paid to spraying for control. The insect pests of banyan trees mainly include aphids, red spiders, scales, etc.
Spray the leaves with 500ppmag oxide dimethoate or 1000 times the solution of 50 gum sulfur and phosphorus wettable powder. It is also effective to use laundry detergent water or wind oil essence water. (6) Pruning and maintenance
In the peak growing season, the plants should be topped and budded, and a major pruning should be carried out in the autumn, and no pruning should be carried out thereafter, because the plants grow slowly in winter and should not be pruned in winter. The pruning of the banyan tree should be done by a special person, and the long branches, parallel branches, sick branches, and cross branches should be cut off to make it a whole layer of beauty.
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This situation is a lack of nitrogen fertilizer, you use some nitrogen fertilizer, once every ten days and a half months, and a few times will grow lush leaves!
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Generally, long-term lack of water in potted plants will dry up the branches and leaves, but too frequent watering will also lead to rotten roots, unable to absorb nutrients and cause branches and leaves to dry up, of course, there may also be insect pests, it is recommended to change the soil first, and then buy some potted insecticides to spray it, and it is enough to drench water once a week.
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There are small white worms behind the leaves, you can go to the pharmacy to buy some insecticides, and spray them on it.
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My banyan tree keeps shedding leaves
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