Why are the leaves of the camphor tree yellow?

The main reason for the yellowing of the leaves of camphor trees is iron deficiency yellowing, which is mainly due to the strong alkalinity of the soil, which affects the effectiveness of trace elements such as iron in the soil, and the absorption capacity is greatly reduced, resulting in the lack of trace elements such as iron in the leaves, and the synthesis of chlorophyll is blocked, resulting in the yellowing of the leaves. Solution: First, fertilize outside the roots to supplement trace elements to restore the green color of the leaves; Secondly, the rhizosphere soil should be improved to fundamentally solve the root cause of yellowing disease.

For more information, please refer to the relevant website of the C. camphor Yellowing Disease Research Center. In addition, there are a few leaf yellowing because the rhizosphere soil surface is suddenly closed, resulting in a lack of oxygen in the root system, causing yellowing, such as pouring concrete around the camphor tree, such yellowing is difficult to control, unless there is enough space in the middle of the tree hole.

The yellowing of the leaves of the camphor tree may be due to yellowing. Yellowing, also known as green deficiency, is a physiological disease. Camphor trees are acid-loving seedlings, and if they grow in alkaline soil for a long time, it will affect the absorption of iron and other trace elements by their roots.

At the same time, the lack of nutrients in the soil, poor root development or improper application of chemical fertilizers and pesticides can also affect the absorption of iron by camphor trees and accelerate the occurrence of yellowing disease.

Solution: Apply more organic fertilizer to improve the physical and chemical properties of the soil, so as to prevent and reduce the occurrence of iron deficiency yellow leaves. During the growth period, spray the foliar surface with ferrous sulfate solution, generally 50 kg of water plus 100 grams to 500 grams of ferrous sulfate and 50 grams to 100 grams of citric acid.

In sunny and windy hours, spray the unaged leaves or water the roots with ferrous sulfate solution, generally adding 100 grams to 150 grams of ferrous sulfate and 50 grams to 100 grams of citric acid per 5 kg of water.

The deciduous leaves of the camphor tree are present in all seasons, it is an evergreen tree, the leaves are renewed in all seasons, and the spring is the most, concentrated in April and May with the budding.

Camphor trees are light-loving and slightly shade-tolerant; It likes warm and humid climate, cold tolerance is not strong, the soil requirements are not strict, and it is more resistant to water and moisture, but when transplanting, it is necessary to pay attention to maintaining soil moisture, which can easily lead to rotten roots and lack of oxygen and die, but it is not tolerant to drought, barren and saline-alkali soil. The taproot is well-developed, deep-rooted, and can resist wind. Strong germination and resistance to pruning.

The growth rate is medium, and the tree is large like an umbrella and can provide shade and shade. It has a long survival period and can grow into hundreds of thousands of years of towering ancient trees, and has a strong ability to absorb Li silver smoke and retain dust, conserve water sources, consolidate soil and prevent sand and beautify the environment. Planting can use Bika granular fertilizer as base fertilizer.

Camphor trees actually lose their leaves all year round, but in the spring, they concentrate on mountain residue to prevent them from losing their leaves. Because the weather warms up in spring, the camphor tree begins to sprout and grow new leaves, so the old leaves will fall intensively, so in the spring, the camphor tree loses more leaves, of course, it also needs to be analyzed according to the climatic characteristics of different regions.

In fact, it feels like she is shedding leaves all year round, but in comparison, spring may be the most jet lag phenology of his confinement season, when he has new shoots in spring, and the leaves will fall out when they are wide out, or the hypothetical liquid is said to be the season of autumn and winter, except for summer, other seasons are easy to fall.

The camphor tree grows faster in the spring, has a strong metabolism, and sheds its leaves faster, but the camphor tree sheds its leaves in every season.

In spring, especially in March and April, the temperature rises, the metabolism of camphor becomes faster, a large number of new shoots grow, and the old leaves fall off, so it is spring deciduous leaves.

Evergreens slowly grow new leaves. While the old leaves fall off, the new leaves continue to grow.

In addition, the defoliation of camphor is also related to the fertility of the soil. If the soil is not fertile and alkaline, the water is not enough, or a large amount of construction waste is piled up on the soil, in this case, the growth of camphor will generally be weaker and the leaves will fall more.

Although the camphor tree is an evergreen species, its leaves also need to be replaced by the old and the new, this process will be carried out all year round, but it will not be like the deciduous tree will appear after all the leaves fall and then replace the new leaves, even in winter, there are still full of green leaves, in spring, like many deciduous trees, the camphor tree is affected by climate change, and will also sprout a lot of new leaves, at this time, the old leaves will be "topped off", so there will be a large number of fallen leaves.