Why are the yellow leaves of evergreen cultured in water?

Evergreen can be cultivated not only in soil, but also in hydroponics, but the culture medium they use is completely different. The soil is young and naturally inseparable from the soil, but the basin soil is required to be fertile and soft, breathable and permeable, while hydroponics must be raised by water. However, no matter which way is adopted to breed, as long as the usual maintenance and management method is correct, it can often keep the four seasons green and show with a very high ornamental value.

However, whether it is soil culture or hydroponics, if the maintenance and management work is not done well, it is also prone to growth problems. Among them, the most obvious is the yellowing of plant leaves. In the previous article, "what to do with the yellow and drooping leaves of potted evergreen", the editor talked about the reasons for the emergence of yellow leaves in Tupei evergreen and the precautions to avoid. So, why do hydroponic evergreens have yellow leaves? Today, the editor continues to share with you the knowledge about the occurrence of yellow leaves in evergreen.

After many practices and drawing lessons from the experience of water-raised evergreen veterans, the editor found that the phenomenon of yellow leaves in hydroponic evergreen is often closely related to light, water quality and nutrients. Next, the editor will make an in-depth analysis and explanation for you.

1. Improper lighting

Plants need light to carry out photosynthesis, and then accelerate metabolism, thus promoting plant growth. The same is true of evergreen, whether it is soil culture or water culture, can not be lack of light for a long time. If the hydroponic evergreen is in a shady environment, it is easy to grow and yellowing branches and leaves in places where there is a lack of light for a long time, which not only affects the growth of the plant, but also reduces its ornamental to a great extent.

Therefore, at ordinary times, we need to find a suitable placement environment for water training, which requires not only proper reception of light, but also smooth ventilation. The place that meets these two conditions is usually in a bright place near the windowsill. Of course, it can also be placed on the relatively empty balcony, more fully receive light, more able to ensure smooth ventilation. However, if the sun is too strong, shading measures need to be taken to avoid direct light and provide it with some scattered light.

Second, the water quality is getting worse.

If the water quality used by the young is not good, the original may cause some damage to the root system of the plant, and in serious cases, it may cause rotting root phenomenon, resulting in further pathological changes, resulting in a vicious circle, and if it is light, it may cause yellow leaves in the evergreen. Serious, it may be fatal. Therefore, in the process of cultivating thousands of young people, the choice of water quality is very important.

When there is a problem with the water quality, the water source is usually clean, which is often due to the pollution phenomenon caused by the untimely change of water or the soiling of the water cup in the container during the period, thus changing the water quality. In order to ensure that the water quality does not change significantly, it is usually necessary to replace the water in the container every 5-7 days. And this replacement is not all replaced, it is usually appropriate to replace the water in the container with 2 percussion 3 or so. In this way, it is not only conducive to keeping the water in the container relatively clean, but also conducive to the germination and growth of plant roots, thus promoting plant growth.

Third, lack of nutrients

In the process of cultivating thousands of young people in water, the most frequently used means of management and protection is to change water. If the water is not changed in time, it is not only easy to breed germs in the water, resulting in changes in water quality, but also lack of nutrients. Even if the water is changed in time, it sometimes needs to be replenished, especially when the evergreen is growing rapidly. In the case of insufficient nutrients, there is often the phenomenon of yellowing of leaves. Therefore, in addition to changing water, it is also necessary to add some nutrients appropriately.

Add nutrients to the evergreen, usually when the water is changed. When changing water, a few drops of nutrient solution can be dropped into the water to increase nutrients, which can be carried out according to the standard of 6 drops per liter of water. Then shake the water and pour it into the evergreen container. The root system will absorb the supplementary nutrients together with water and transport them to all parts of the plant, thus promoting the growth of the plant. It should be noted that do not drop too much nutrient solution, otherwise it is easy to cause waste, at the same time, it will also make the fertility concentration too high, non-effective too strong, thus leading to the possibility of fertilizer damage.

Time: 2019-05-29 Click: