The cultivation of rhododendron pays attention to the suitable temperature.
Rhododendron has damage when the temperature is too high or too low, and only under the condition of suitable temperature can it develop rapidly and healthily, so paying attention to the suitable temperature of rhododendron should be a key point in the cultivation and management of rhododendron.
Cuckoos should be moved into rooms with a room temperature of not less than 5 ℃ between Frosts Descent. During the overwintering period, different varieties have different requirements for temperature, such as summer cuckoos not less than 5 ℃, spring cuckoos about 10 ℃, and western cuckoos about 8: 15 ℃. It should be noted that freezing injury will occur to different varieties when the temperature is less than 3 ℃.
Spring leaves the room to keep 15 ℃ at night and 18 ℃ during the day, and the suitable temperature for the growth period is 12-25 ℃, so spring and autumn are the period of exuberant growth; after entering summer, if the temperature exceeds 35 ℃, the new shoots and twigs grow slowly or are in a semi-dormant state with extremely weak physiological activity, and if the temperature continues to rise, the protein in the cells can be denatured and solidified, and there is a danger of heat death at any time.
If you want to blossom ahead of time, you can move the spring cuckoo indoors to the sun in December, keep it about 15 ℃, and often sprinkle water on the leaves, which can make the spring cuckoo blossom earlier in February.
Rhododendron requires that the temperature difference between day and night should be about 6 ℃. If the day temperature is too high or the night temperature is too low, it will affect the vegetative growth and reproductive growth of flowers.
The suitable temperature for cutting rhododendron is about 20 ℃, and it can take root after two months. When the temperature exceeds 30 ℃, it is necessary to cover the curtain immediately to cool down, otherwise it will seriously affect rooting.
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How do azaleas sow and reproduce?
Sowing is sexual reproduction. As the seed setting rate of natural hybridization is very low, artificial pollination is generally needed to improve the seed setting rate of rhododendron and obtain more seeds. Its main method is when the azaleas are in full bloom, choose strong female parents with good growth and beautiful colors, move to the greenhouse, leave 3-4 flowers with large flowers and early flowering in each pot, pick the stamens and new buds near the flowers, and concentrate nutrients. When mucus appears on the head of the style, just use a new brush to dip the pollen of the male parent and apply it for a few times. One week after pollination, the flowerpot
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Cultivation and pest control techniques of rhododendron
Rhododendron, also known as rhododendron, sheep horn flower, rhododendron, rhododendron, rhododend There are single, semidouble, double, etc., the flesh is mostly red, there are bright red, pink, pink, red, purple, yellow and other colors. there are pure white, golden yellow, staring yellow, green lotus and other colors, or mixed with Banzhen, stripes and so on. There are more than 800 species of plants of the same genus, most of which are produced in China. They are traditional famous flowers in China, and they are one of the "top ten famous flowers" in China.
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