China Garden Network May 28th news: With the development of flower industry, miniature and compact potted flowers and bonsai are more and more loved by people, so the dwarfing technology of flowers is showing more and more vitality. Dwarfing culture's main technologies are:
First, asexual reproduction
Grafting, cutting, layering and other asexual propagation methods can achieve dwarfing effect, shorten flowering period, reduce plant height and compact plant type.
Grafting can be dwarfed by selecting dwarfing varieties.
Cutting can determine the height of the plant by considering the cutting time. For example, chrysanthemums can be dwarfed in late July to control lodging. In addition, cuttings with buds can make Dahlia plants tall, planted in pots with a diameter of more than ten centimeters, with a plant height of only a few feet and bright flowers.
Chrysanthemum is dwarfed by the propagation of horn buds.
Second, shaping and pruning
Through shaping, the main branches are cut off when the plants are young to promote their germination, and then too many side branches with poor growth are cut off to achieve full plant shape, low plants and improve ornamental value.
This method is often used to dwarf Chinese rose, bouquet of safflower, azalea and foliage flower.
Narcissus destroys the dwarfing of growing points by acupuncture and carving.
Third, control fertilization.
Potted flowers should be treated with phosphorus and potassium fertilizer in time and less nitrogen fertilizer to control the vegetative growth of plants and achieve dwarfing.
Fourthly, artificial koji making and drying.
Artificially twisted branches blocked the nutrient transport channels of plants, slowed down the growth rate of plants and reached the low plant type of flowers.
Generally widely used in the production of small bonsai.
Verb (abbreviation of verb) uses plant growth regulator.
1. Spraying a bunch of red plants with paclobutrazol can shorten internodes, reduce leaf area and deepen leaf color, thus changing the phenomena of thin stems, thin leaves and serious flower dropping and improving ornamental value.
In addition, flowers such as snapdragon and chrysanthemum are often used for dwarfing.
2. Treating a bunch of red plants with mepiquat chloride can reduce the plant height by 26%, shorten the stem nodes, increase the number of branches and improve the ornamental value.
3. Treating plants with B9 can inhibit the vegetative growth of morning glory, shorten its vegetative growth period by 665,438+0.5-67%, and shorten its flowering period by 40.5%, thus making plants short, with compact branches and leaves and concentrated flowering period.
4. The use of chlormequat can inhibit the vegetative growth of Petunia, dwarf its plant type and improve its ornamental value.
Six, radiotherapy
Some flowers can also change the growth state of plants through radiation treatment, so as to achieve the purpose of dwarfing. For example, treating narcissus bulbs with Y rays can control the growth of narcissus and dwarf narcissus plants.
Banana coke treated at 60℃ can reduce the height of canna by 30-50 cm and improve its ornamental value.