How to raise the Black King Kong rubber tree?

Black King Kong rubber tree, also known as Indian rubber tree, rubber tree, etc., originated in India and Malaysia and other places, and now there are many cultivation in various parts of our country. It is a common ornamental tree and street tree in the garden, which is very suitable for indoor beautification. Small and medium-sized plants are often used to beautify the living room and study, while medium and large plants are suitable for being arranged on both sides of the foyer and in the center of the lobby of large buildings. Let's take a look at how to raise black rubber trees.

Growth habits of Black King Kong Rubber Tree

Black King Kong rubber tree likes high temperature, humid, sunny environment, suitable growth temperature 20: 25 ℃, avoid direct sunlight, but also can bear shade but not cold, safe overwintering temperature is 5 ℃. Resistant to air dryness. Avoid clayey soil, not resistant to barren and drought, like loose, fertile and well-drained slightly acidic soil.

Propagation method of Black King Kong Rubber Tree

1. Cutting method: the cutting time is in late spring and early summer, which can be combined with pruning. Cuttings often choose one-year-old semi-lignified middle branches, and the wound should be sealed in time with cement or plant ash. The length of cuttings is to keep 3 buds as the standard, cut off the lower leaf, close the upper two leaves, and tie them with a thin plastic rope. The cuttings are then cut on a bed with plain sand or frog stone as the substrate. Keep the plug-in bed with high humidity after insertion, but do not accumulate water, the suitable temperature is 18-25 ℃, often sprinkle water to the ground to improve air humidity, and do a good job of shading and ventilation, it can take root in about 2-3 weeks.

2. Striping method: select 2-year-old branches with appropriate size, good development and abundant tissue, and make a light circular peeling of about 1 cm in width in the predetermined part of the soil, and apply 30~50ppm 's naphthalene acetic acid solution, then wrap the ring cutting part with wet soil or moss mixture or vermiculite that absorbs enough water, wrap it with plastic film on the outside, tie it tightly at the lower end, and leave holes at the upper end to facilitate ventilation and irrigation. Pay attention to maintenance, pressing in June and rooting from July to August. After taking root, the potted plant can be cut off.

Culture method of Black King Kong Rubber Tree

1. Rational fertilization: the fertilization of black King Kong rubber tree should be based on nitrogen fertilizer, with a small amount of phosphorus and potassium fertilizer. Can use retting soybean water, bean cake water diluted after filling the root, the general concentration of 20%. Can also use inorganic fertilizer, such as urea, but to achieve less frequent application, do not apply thick fertilizer, avoid burning roots.

2. Soil configuration: it is advisable to use 1 part of rotten leaf soil, 1 part of garden soil and 1 part of river sand and a small amount of base fertilizer to form culture soil when black rubber tree is planted in pot. It grows very fast in a hot and humid environment, producing a leaf every 5 to 10 days, during which sufficient fertilizer and moisture must be ensured.

3. Light management: black King Kong rubber tree likes strong sunlight, so it should be cultivated in the sun during the whole growing season from spring to autumn and in strong light in winter. But it can also tolerate shade, and it is better to be cultivated in low light indoors.

4. Temperature control: the suitable temperature for the growth of Hevea brasiliensis is between 20 and 30 ℃, and the growth is the most luxuriant at 25 to 30 ℃. The growth is poor when it is less than 10 ℃, and it is easy to suffer frost injury when it is less than 0 ℃. If the black King Kong rubber tree is hit by a cold wind, there will be yellow leaves and fallen leaves.

5, timely watering: black King Kong rubber tree likes water, but is not resistant to water stains, there is a waterlogging phenomenon, the root can not get oxygen, there will be yellow leaves, fallen leaves. Watering should follow the principle of "see dry and wet". Don't water too often. Winter should be spent indoors, generally watered once a week, summer should be decided according to the weather and basin soil humidity!

6. Reasonable pruning: in order to make the black rubber tree grow symmetrically and ensure a good plant shape, it should be coring when the seedlings grow to a height of 50 cm to 80 cm, so as to promote the germination of lateral branches. After the lateral branches grew, 3-5 branches were selected, and then the opposite lateral branches were cut once a year, and the larger plants with complete plant shape and round plump could be obtained after 2-3 years.

7. Pest control

① leaf spot: if leaf spot is found in black King Kong rubber tree, it can be sprayed with chlorothalonil or carbendazim, once a week, 2 or 3 times in a row.

② anthrax: anthrax is not easy to be found at first. At first, it is just a small brown spot on the leaves. If it is not treated in time, it will quickly expand into a piece, making it lose its ornamental value. Therefore, once the disease is found, 400 times methyl topiramate should be sprayed on the leaf, once a week, 3 times in a row, which can generally be cured.

③ rot root disease: rot root disease is generally caused by Rhizoctonia or Pythium infection in the soil or caused by its physiological diseases, bacterial infection can be treated with dimethazone, carbendazim, or Wulu nitrobenzene 500x liquid root irrigation treatment, physiological diseases are mostly due to soil too sticky and heavy, watering too often, the root system can not breathe, can be replaced with well-drained soil.