How do the green leaves of Douban go black?

Douban green is a kind of ornamental plant with high ornamental value, which is mainly as a potted plant and is widely distributed in our country. Because Douban green is highly ornamental, it is also welcomed by many people. However, in the cultivation of Douban green, there are often many problems affecting the growth of Douban green. Among them, the black green leaves of Douban is one kind, so what is the yellowing of green leaves of Douban? The following editor will give you a brief introduction, let's have a look!

1. Improper watering

Douban green in the growth, the demand for water is still relatively large. Douban green generally likes to grow in a more humid environment, but we should pay attention to control the amount of water when watering. If too much watering leads to stagnant water in the soil, it will hinder the respiration of the green roots of Douban, which will lead to rotting roots. And when watering, if the water temperature is too cold, it will easily lead to the blackening of leaves in Douban green. Therefore, we should pay attention to the amount of water, if it produces stagnant water, it should be drained in time to avoid more rotten roots.

2. Improper fertilization

When cultivating Douban green, fertilization is also very important. Reasonable fertilization method is very important to the growth of Douban green, but when applying fertilizer, if you don't control the amount of fertilizer and apply too much fertilizer or apply farm manure that is not fully mature. Then it will lead to fat and burning roots, which leads to the abnormal growth of Douban green and the blackening of leaves. Therefore, when we apply fertilizer, we should not only strictly control the amount of fertilizer, but also pay attention to ensure the full maturity of organic fertilizer. If you apply too much fertilizer, you should water and dilute the fertilizer in time.

3. Temperature discomfort

Temperature is also one of the main reasons for the blackening of Douban green leaves. Douban green does not like to grow in high temperature environment, especially in summer, high temperature environment is very disadvantageous to the growth of Douban green. If you stay in a high temperature for a long time, black spots will begin to appear, and in severe cases, it will lead to leaf decay. However, the temperature should not be too low, too low temperature will lead to cold injury and blackening of the leaves. Therefore, we must pay attention to the control of temperature, especially in summer and winter, we must pay attention to ventilation and cooling, cold protection and other work.

4. Excessive illumination

Douban Green's resistance to strong light is also relatively poor, in the cultivation of Douban Green, we should pay attention to create a weak light environment for it. If Douban green is in the environment of strong light for a long time, then the leaves of Douban green are easy to be burned by the sun and blacken. Therefore, light control is also very important, so that Douban green can not be directly exposed to sunlight, especially in summer. However, we should not be in a dark and weak light environment for a long time, but also provide it with an appropriate amount of scattered light.

The above is a brief introduction to the blackening of Douban green leaves. That's all for today's introduction. This article is for reference only. I hope it can help you all.