What if the green leaves of potted beans turn yellow?

Douban green is a very interesting herb, which is usually placed on the desk and other places at home, which is especially popular with girls. if you want to pick up girls or also like Douban green, you need to master the maintenance methods of Douban green. keep the Douban green at home full of vitality.

Douban green is loved by people because its leaves are green and round, but the longer the curing time, the more easily the old leaves turn yellow, affecting the viewing, do you know what to do if the leaves turn yellow? First of all, we have to find out what causes the green leaves of Douban to turn yellow.

Causes of yellowing of green leaves of potted beans and suggestions for maintenance:

1. The temperature is too high

In fact, Douban green leaves black, soft, yellow, higher temperature will be the main reason, people will sweat when muggy, the plant can only rely on its own reaction, tell its owner.

Suggestion: be sure to control the temperature and try not to exceed 38 ℃.

2. Improper green watering

Douban green likes the moist environment, but it does not mean that it needs more water. Douban green watering too much rhizome is soaked in water for a long time, and the nutrients of the plant can not be transported upward, resulting in yellowing of leaves. If it is not watered enough, the plant will lack water physiologically and the leaves will turn yellow and curl.

It is suggested that during the maintenance period, the soil of the plant should be moist, no stagnant water should be kept, and the soil should be sprayed 2 or 3 times a day to increase the humidity in the room.

3. Improper fertilization of Douban green.

Douban green requires a lot of fertilizer and water, so we should pay attention to avoid the root system when fertilizing, so as not to burn the root with fertilizer and cause root rot, thus causing yellow leaves. But also do not blindly apply fertilizer, require gradual circulation, should be appropriate application of fertilizer and water.

Suggestion: fertilize in the evening and water the next morning, which can play the best fertilizer effect and avoid fertilizer damage effectively.

4. Damage of green disease and insect of Douban.

Black spot gray mold is caused by high humidity and poor ventilation in the environment. Always observe and find that bugs eat leaves, seduced by beer, scalded to death by boiling water or killed by salt. If the plant suffers from ringspot disease and the plant is dwarfed and twisted, an appropriate amount of Bordeaux solution can be sprayed at this time.

Suggestion: to prevent the harm of diseases and insect pests to the plant, early detection and early treatment.

At ordinary times, management should pay attention to moderate light and reasonable fertilizer and water. When the sun is not too strong, you can put the potted plants outside. But summer can not be exposed to direct light, especially can not be placed in the sun, otherwise it will cause branches and leaves to turn yellow.

So how can we make Douban green?

1. Soil

Douban green requires soil humus to be rich, loose, fertile and well drained. 7 parts of leaf soil and 3 parts of river sand can be selected to form culture soil with a small amount of base fertilizer, or 6 parts of peat soil, 4 parts of perlite and a small amount of base fertilizer can be mixed. When planting, you generally buy potted plants directly, and you don't need to match the soil. You can have a little understanding of the composition of the soil.

2. Temperature

Douban green likes warm, moist, semi-shady environment, high temperature tolerance, the suitable temperature for growth is about 25 ℃, it can grow normally at 10: 15 ℃ in winter, stop growing below 10 ℃, suffer under 5 ℃, and die when it is less than 0 ℃. A small pot of beans and green leaves is not so easy to raise.

3. Lighting

Douban green is more shady, and can be cultured indoors with bright scattered light in the four seasons. You can see more light in spring and autumn, more sunshine near the south window in winter, and north windowsill in summer to block the light properly. When the light is suitable, the leaf color is gorgeous, and the light is too strong or too dark to make the leaf color lose its delicate and beautiful color.

4. Watering

Watering to basin soil is suitable for dry and wet, in the growth process, spring and autumn is the peak season of growth and development, more water. The summer weather is hot, but the growth of the plant is slow because of the high temperature, which can be irrigated once in the morning or evening, high temperature and wet stems and leaves are easy to rot, depending on the weather and basin soil. The basin soil should be slightly dry, because its stems and leaves are fleshy, too wet and easy to make the roots rot, especially in winter due to low temperature, showing a dormant state, basin soil should be dry.

5. Fertilization

Douban green is usually renewed once every 2 ~ 3 years. During the growth period, mature liquid fertilizer or nitrogen and phosphorus fertilizer was applied every 15 to 20 days, and the concentration was 15% 20% for cake fertilizer and 0.2% for 0.3% nitrogen and phosphorus compound fertilizer. If fertilization is not measured, it can reduce nitrogen fertilizer and make the markings on the leaves more significant.

Time: 2019-05-31 Click: