Guidelines for the maintenance of rhododendron for monitoring ammonia

Cuckoo conservation guide for "Monitoring ammonia"

Rhododendron, also known as Yingshanhong, rhododendron and so on. Rhododendron is one of the top ten famous flowers in China. Among the ornamental flowers, the rhododendron can be called the beauty of flowers, leaves, soil culture and potted plants. it is the most widely used ornamental flowers. the picture shows the rhododendron bonsai.

1. Monitoring function

Rhododendron is highly resistant to harmful gases such as ozone and sulfur dioxide. at the same time, it can also absorb these harmful gases and purify the air. It is also very sensitive to ammonia and can be used as a monitoring plant.

two。 Maintenance guide

(1) the rhododendron is a long-day flower, even in the middle of summer, it should not be placed in the shade, but in a ventilated and cooler place, that is, outdoor shade. At the end of September and the beginning of October, the sun intensity weakens and the weather is cool, so the shading time should be shortened step by step in order to put it on the southeast balcony in front of the house.

(2) the temperature moved out of the greenhouse in the middle and late April, first placed in the leeward to the sun, shaded in summer, or placed in the shade under the tree to avoid strong direct sunlight. The suitable temperature for growth is 15-25 ℃, and the highest temperature is 32 ℃. It began to move indoors in the middle of October, put it in a sunny place in winter, keep the room temperature at 5-10 ℃, and the lowest temperature should not be lower than 5 ℃, otherwise it would stop growing.

(3) watering more and frequently in summer, because of high temperature, strong sunshine and fast evaporation of water in summer. Water should be fully watered in the morning; watering at night depends on the situation, and the leaves should be sprayed to keep the leaves clean and the environment moist.

(4) fertilization in late winter and early spring every year, it is best to apply some organic fertilizer to cuckoos as base fertilizer. After the rhododendron blossoms from April to May, because the plant consumes a lot of nutrients during the flowering period, the new shoots grow with the germination of leaf buds, which can be fertilized every 15 days or so. After the ambush, most of the shoots have stopped growing, at this time is the high temperature season, the physiological activity is weakened, can no longer topdressing. After autumn, the climate is getting cooler, and there is continuous autumn rain, temperature and humidity is suitable for cuckoo growth, at this time can do the last fertilizer, generally not suitable for fertilization after winter.

(5) pruning is an important measure in daily maintenance and management, which can regulate the growth and development and make the growth exuberant. Daily pruning needs to cut off a small number of diseased branches and weak old branches, combined with the crown shape to cut off some overdense branches to increase ventilation and light, which is beneficial to plant growth.

(6) the buds should be picked in time during the heart-picking period, so that the nutrients are concentrated and the flowers are colorful [Jishan Huayao].

(7) potted plants should not be placed on the ground. They should be placed on flower racks or inverted empty flowerpots with shade nets or curtains hanging on them, and should be kept.