With the development of the flower industry, compact, compact potted plants and potted plants are becoming more and more loved by people. Therefore, the dwarf technology of flowers has also received increasing attention. The following will give a brief overview of the application of dwarfing technology in flowers:
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I. Cultivation dwarfing
1. Asexual reproduction Grafting, cuttings, layering and other asexual reproduction methods can achieve dwarfing effect, shorten the flowering stage, reduce plant height, and compact plant type. Grafting can be achieved by selecting dwarfing varieties for dwarfing. The cutting height can be determined by considering the cutting time. For example, chrysanthemums can reach dwarfing and control lodging in late July. In addition, the planting of tall dahlias can be planted in pots with a diameter of more than ten centimeters with the budding method. The plant height is only limited by the size and color of the flowers.
2. Pruning The pruning is performed by pruning. When the plant is young, the main branch is removed and the germinating side branch is removed, and then too many poorly-developed lateral branches are cut off to achieve fullness of the plant type, low plant height and improved ornamental quality. Roses, rosettes, azaleas, and foliage are used for dwarfing.
3. Control fertilization Apply timely phosphorus and potash fertilizer to potted flowers, and use less nitrogen fertilizer to control the vegetative growth of plants to achieve dwarfing.
4. Artificially artificially twisting the stems to make trunks obstruct the passage of plants, slow down the growth of the plants, and achieve low and short plant types. Generally used in the production of small bonsai more.
5 other dwarfing methods such as chrysanthemum using foot bud propagation to achieve dwarfing, narcissus dwarf by acupuncture, engraving damage to the growing point.
Second, the use of growth regulators High-quality potted plants require planting short, compact, stout stems, flowers flourishing, dwarf cultivation alone is not enough, to supplement with hormone substances to inhibit plant growth to short Change. Commonly used hormones include paclobutrazol (PP333), DPC, B9, and CCC. Test proved:
1. With 40 ppm to 80 ppm of PP333 acting on a series of red plants, it can make the internodes shorter, the leaf area becomes smaller, the color of the leaves is deepened, thus changing the high stem diameter of a bunch of red plants, the sparsely flowered leaves, and the serious off-legs. Phenomenon, to enhance the ornamental value. In addition, PP333 is also commonly used in dwarfing flowers such as snapdragon and chrysanthemum.
2. The treatment of a series of red plants with 100 ppm of DPC reduced the plant height by 26%, and the stem segments became shorter, the number of branches increased, and the ornamental quality increased.
3. The vegetative growth of morning glory can be inhibited by B9 from 1500ppm to 6000ppm, and it can be dwarfed by 61.5% to 67% in the vegetative growth stage and dwarfed by 40.5% to 46.4% in the flowering stage, thus making the plant type dwarf and the branches and leaves compact. Flowering is concentrated.
4. The use of CCC from 2500 ppm to 10000 ppm inhibits the vegetative growth of Petunia hybrids, which makes the plant type dwarf and improves ornamental quality.
Third, the radiation treatment of some flowers, but also through radiation treatment to change the growth of plants to achieve dwarfing. For example, treating narcissus bulbs with r-rays can control daffodil growth and dwarf narcissus plants. Treating canna with Cobalt 60 can reduce canopy height by 30 to 50 centimeters and increase ornamental value. 