Potted chrysanthemums are better for plant-shaped dwarfs, large flowers, and leaves. If the plants are too high, they will affect the ornamental effect. To make the chrysanthemum dwarf, the following measures can be taken:
There are many varieties of chrysanthemums in the dwarf varieties, and the family cultivation is mostly the case chrysanthemum. It has the advantages of short plant, leafy, large flower, bright color, long viewing period and short growing period. The dwarf varieties in the case of Chrysanthemum include "Xu Tao" and "Lingbo Fairy". When cutting the cuttings, the cuttings should be cut from the mother plants with short internodes and thick stems in the same variety, and the chrysanthemums cultivated will be relatively short.
Delaying the cutting time The regular cutting time of chrysanthemum is from April to May, delaying the cutting time, shortening the vegetative growth period of chrysanthemum, and achieving the purpose of dwarfing the plant. The cultivation of multiple chrysanthemums can be postponed until mid-July, and the cultivation of a single chrysanthemum can be postponed until early August. At this time, the temperature is high, the air is dry, and the survival rate of cuttings is affected. The tops with strong growth, thick stems, no pests and diseases, and semi-lignified should be selected as cuttings, leaving less leaves. The lower leaves of the cuttings are removed, leaving only the upper 2 to 4 leaves to reduce water consumption. Insert with the cut to prevent the blade from losing water. The base of the cuttings was immersed in a 50 ppm GGR (plant growth regulator) solution for 30 to 60 minutes. After being inserted, put it in a cool place to protect or shade the shade, prevent direct sunlight, and set up a plastic shed to increase the humidity of the air. Spray the leaves once or twice a day to keep the leaves moist. Do not allow water to flow into the potting soil when spraying. This will not only satisfy the chrysanthemum's demand for water, but also prevent stagnant water and lead to rotten roots.
Shallow insertion and shallow planting can avoid the effects of high temperature and dryness, increase the survival rate of cuttings, and reduce the height of chrysanthemum. The method is to insert the cuttings into the soil of 3 to 4 cm, compact the soil by hand, and pour water once. After half a month, the cuttings remained green, indicating that they had taken root. After one month of cutting, the first transplant can be carried out. When transplanting, it should be planted shallowly, and the plants should be long due to waterproofing and excessive nutrients. After transplanting, first put it in a cool place to maintain it. After slowing down the seedling, move it to the sunny side to let it receive more light. The second transplant is also to be planted. First, the potting soil is buried in about half of the pot height. Later, as the length of the chrysanthemum stem grows, the soil is gradually covered. This can not only achieve the purpose of dwarf plant height, but also make the roots buried in the soil emit new roots and enhance The ability of the plant to absorb nutrients makes the chrysanthemum grow robust and beautiful.
The control of water and fertilizer cultivation plants with short flowers and large chrysanthemums must be carried out in accordance with the principle of “pre-control and post-promotion†in water and fertilizer management, that is, in the vegetative growth period, water and fertilizer should be deducted to prevent the plant from becoming dwarf. In the late stage of vegetative growth and the flowering stage of the buds, it is necessary to increase the amount of watering and fertilization, and to promote the fullness of the buds, the beauty of the colors, and the neatness of the flowers. The specific method is to control the watering in the early stage of vegetative growth, that is, after the first transplanting, it is better to dry the potting soil well, and the watering should be carried out before noon. Fertilization can be applied with 0.1% urea or 0.05% potassium dihydrogen phosphate. In the later stage of vegetative growth, that is, after the second transplant, the amount of fertilizer should be increased in addition to the higher nutrient content of the culture medium. Apply a thin cake fertilizer once a week, while spraying 0.1% to 0.2% urea or potassium dihydrogen phosphate liquid fertilizer on the leaves. Before the bud, the watering should be carried out according to the principle of “seeing dry and seeing wetâ€. If too much water is poured, it will cause longevity. After the bud, the plant height is basically fixed, which can increase the amount of watering, and combined with watering to apply more phosphorus and potassium fertilizer, and less nitrogen fertilizer to promote the flower color. Stop fertilizing when the flower buds pass through and reduce the amount of watering.
Excerpts from the buds of the potted chrysanthemum, in addition to the unique chrysanthemum, generally leave 5 to 7 flowers. To achieve a short plant shape, two toppings should be performed. For the first time, after the chrysanthemum colonization, the main buds were removed on the top of 3 to 4 leaves. After the bud, only one main bud with good growth and large flower buds is left for each branch, and the other side buds are all removed.
The medium used for the first transplanting with different culture medium requires loose, high gas permeability and low fertility content to promote the multiple roots of the chrysanthemum. It can be prepared by using 40% humus soil, 40% river sand and 20% garden soil. It can be used after disinfection. The culture medium of the second transplant requires strong permeability, high fertility and long-lasting fertilizer to meet the needs of pregnant buds and flowering. It can be prepared with 10% decomposed cake fertilizer, 50% humus soil, 35% sandy loam and 5% quick-acting phosphate fertilizer.
Spraying plant growth regulators by spraying plant growth retardants can inhibit cell division and elongation, thereby achieving the purpose of short internodes and dwarfing of plants. Commonly used hormones are more than long (B9), paclobutrazol and so on. The use concentration is 0.1% to 0.2%. The method of use is as follows: one week after cutting, a longer-lasting solution is sprayed onto the top of the chrysanthemum to inhibit the growth rate of the apex. After one week in the upper basin, evenly spray the solution for a long time every 7 to 10 days until the buds are in the middle, without interruption. Spraying time is appropriate in the evening, which is beneficial to plant absorption. Avoid spraying at noon, because it is easy to cause phytotoxicity. (
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