How to cultivate and preserve azaleas in water?

How to cultivate and preserve azaleas in water?

Azalea, alias Yingshanhong, Manshanhong, Zhaoshanhong, Yeshanhong, Yingchunhua, rhododendron. The genus Rhododendron of the rhododendron family. There are many species of rhododendron, which is widely cultivated in our country.

Azaleas (pictured) bloom when they bloom, blooming all over the mountains, showing a magnificent scenery of "red mountains and rivers". Azaleas are evergreen or deciduous shrubs. The plant height can reach 2-3 rn. Branches are numerous, branchlets are hairy. Leaves alternate, often clustered at the tip of branches, near-moment rounded, tip obtusely pointed, entire. Leaf blade surface dark green, sparsely hairy; abaxially light green. Leaves nearly papery. Flowers solitary or several clusters on top of branches. Corolla cup-shaped or funnel-shaped, single or double, colorful, flowering from January to May (South China), fruit is a capsule.

1. Hydroponic method

The main results are as follows: (1) the cuckoo should choose a glass container with a planting cup, remove the soil from the soil, wash the roots, trim the fibrous roots and fix them in a container filled with clear water, and add a small amount of carbendazim aqueous solution for anticorrosion and disinfection. induce the growth of aquatic roots, and the upper part is fixed with ceramsite or gravel.

(2) after the aquatic roots grow, the diluted nutrient solution can be added properly and the roots can be submerged. According to the situation of water evaporation, add clear water once in 3-4 days in summer, once in 10-15 days in winter, and renew the nutrient solution in 15-25 days. The pH value is 5.5.

two. Maintenance guide

(1) Light and temperature hydroponic azaleas should be protected from sun and shade in hot summer, and warm and cold in cold winter. Avoid scorching sun exposure, strong light will burn tender leaves, suitable for growth under scattered light with low light intensity. Put it in the greenhouse in winter, the temperature is 10 ℃ 15 ℃, the temperature is below 0 Mel, it is easy to cause frost injury; shade in summer, strengthen ventilation, and take cooling measures.

(2) in order to provide sufficient fertilizer in the bud stage and leaf bud germination stage, rhododendron needs to be irrigated with full amount of nutrient solution for about 10 days. Until the bud burst, foliar fertilizer should be sprayed every 15 days.

(3) the old rhododendron plants should be rejuvenated and pruned, and the branches should be left around 30cm and the upper part should be cut off before the new buds germinate in early spring. However, it should be noted that it can not be cut all at once, but can be pruned by stages. Each time, choose 1-5-1-3 short branches and complete it in 3-5 years. After pruning, fertilization and fine management still need to be strengthened. Usually pay attention to management, avoid excessive growth of branches, can keep the plant growth exuberant for a long time.