Rubber tree, as an important cash crop, the health of its leaves is directly related to the yield and quality of rubber. However, in the actual planting process, the phenomenon of rubber tree leaf drop occurs from time to time, which not only affects the normal growth of rubber trees, but also may have a serious impact on rubber production. This paper will discuss the causes of rubber tree leaf loss from many angles, and put forward the corresponding solutions, in order to provide reference for the planting and management of rubber trees.
1. The Common Causes Of Rubber Tree Leaves
Overwatering
Overwatering is one of the leading causes of rubber tree leaf loss. Especially in rainy days when the air humidity is large, the water in the soil stays for a long time and is difficult to evaporate, resulting in the root system being excessively wet for a long time. This environment not only affects the respiration of the roots, but also easily causes root diseases, resulting in leaf loss. Therefore, when planting rubber trees, the amount of watering should be reasonably controlled to avoid too wet soil.
Overfertilize
Excessive fertilization is also an important cause of leaf loss of rubber trees. If the nutrient concentration in fertilizer is too high, the roots of rubber trees will be damaged and the normal transport of nutrients will be affected. When the root system is damaged, the leaves cannot get enough nutrient support, and then fall off. Therefore, when fertilizing, the principle of “thin fertilizer application” should be followed to avoid applying excessive fertilizer at one time.
Dry air
The leaves of rubber trees are wide, transpiration is strong, and the requirement of air humidity is high. In a dry air environment, the leaves are prone to water loss, resulting in leaf edges drying, curling, and eventually falling off. Therefore, when planting rubber trees, good ventilation conditions should be maintained, and water humidification should be carried out in a timely manner to improve air humidity.
Air pollution
Air pollution also has a serious effect on the growth of rubber trees. Long-term planting of rubber trees in a serious air pollution or indoor closed environment will lead to poor growth, leaf yellowing, falling off and other phenomena. Therefore, when planting rubber trees, you should choose a fresh air environment to avoid placing it in a heavily polluted area.
Not enough light
Although the rubber tree is a shade tolerant plant, being in a dark corner with no light or poor light for a long time will also cause its leaves to fall off. Insufficient light will affect the photosynthesis of the leaves, resulting in the leaves can not synthesize enough nutrients to support their own growth. Therefore, when planting rubber trees, it should be ensured that they can get sufficient light.
2. The Pathological Causes Of Rubber Tree Leaf Loss
In addition to the above common physiological reasons, rubber tree leaf loss may also be related to some pathological reasons. For example, rubber trees may be infected with diseases such as monsoon leaf litter, resulting in leaf spots, shedding and other phenomena. Monsoon leaf litter disease is a disease caused by fungi that is characterized by water-like patches on leaves, petioles, immature gum fruits and branches, accompanied by white gel spillage. After the spread of disease spots, the leaves will soon fall off, which seriously affects the growth and yield of rubber trees.
3. The Solution Of rubber Tree Leaves
Water properly
In view of the problem of leaf drop caused by excessive watering, watering quantity and watering frequency should be controlled reasonably. Before watering, check the moisture of the soil to ensure that the soil is in a slightly wet state. In the case of rainy days or high air humidity, the number of watering should be reduced to avoid too wet soil.
Apply proper fertilizer
To solve the problem of leaf loss caused by excessive fertilization, the principle of “thin fertilizer and frequent application” should be followed. When applying fertilizer, fertilizers with balanced nutrients and moderate concentrations should be selected, and excessive fertilizer should be avoided at one time. At the same time, soil should be regularly loosened and weeded to improve soil permeability and fertility.
Increase air humidity
In order to solve the problem of leaf drop caused by dry air, the air humidity should be increased. You can increase the air humidity by spraying water and placing a humidifier. At the same time, good ventilation conditions should also be maintained to avoid too tight air.
Improve air quality
In order to solve the problem of leaf drop caused by air pollution, the air quality should be improved. You can choose to move the rubber tree to a fresh air environment, or strengthen indoor ventilation to reduce the accumulation of air pollutants.
Increase light exposure
For leaf loss caused by insufficient light, light should be increased. You can move the rubber tree to a place with sufficient light to plant, or increase the light intensity by installing fill light and other ways. At the same time, the branches and leaves should be pruned regularly to improve the photosynthetic efficiency of the leaves.
Prevention and control of diseases
In view of leaf loss caused by diseases, the prevention and control of diseases should be strengthened. The leaves and branches of the rubber tree can be checked regularly, and the disease spots can be cut off and destroyed in time. At the same time, fungicides should also be sprayed for prevention and control to avoid the spread and spread of diseases.
Conclusion
Leaf loss of rubber tree is a complicated problem, which involves many factors. In the actual planting process, appropriate solutions should be taken according to the specific situation to ensure the healthy growth and high and stable yield of rubber trees. At the same time, it should also strengthen the daily management and maintenance of rubber trees, improve their stress resistance and disease resistance, and provide a strong guarantee for the development of the rubber industry.
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