Laying propagation method of Lagerstroemia grandiflora

Crape myrtle originated in India, and now it is widely distributed in China. The adult plant of crape myrtle can be as high as 25 meters, which is a big tree, and it is not difficult to cultivate artificially. It can be propagated by striping propagation. The editor will introduce to you the methods and matters needing attention of striping reproduction of crape myrtle. Friends who like crape myrtle should not miss it.

Giant Crape-myrtle

Generally, new strains are cultivated by pressing. The time of pressing is usually from November of each year to February of the following year. First of all, in the whole nursery ground according to the row spacing of 40 cm, open 20 cm to 30 cm deep ditch, ditch with 2 cm to 3 cm of cow dung or horse manure as base fertilizer. Combined with winter and spring pruning, healthy plants with good varieties, colorful flowers and no diseases and insect pests are selected as mother plants, and fully developed annual or biennial branches are adopted, which are required to be 1 cm to 4 cm in diameter and unlimited in length. After soaking in clean water for 2 hours, they are buried obliquely along the ditch, then cover the roots firmly, the upper part is pressed down along the ditch, cover the soil 10 cm to 15 cm thick, and pour water once, and cover closely with plastic film to increase temperature and moisture. Cover 2 to 3 layers of grass to prevent freezing. In case of sunny weather, the grass can be removed during the day to increase temperature, and then re-covered in the evening. In this way, the buds can sprout and grow in the middle of March, and buds can be seen exposed to the ground in April. At this time, the small arch shed can be covered with plastic film and the grass can be removed. If the temperature in the shed exceeds 30 ℃, it will be ventilated and cooled down.

From the middle of March, the film should be opened every 20 days to cultivate the soil along the ditch, a total of 3 to 4 times, so that the base of the seedling from the original height to 10 cm high ridge, promoting the production of a large number of adventitious roots. At the end of May, the arch shed was removed and cut off according to the germination of the seedlings, and each bud became an independent seedling. At this time, the top should be topped to promote lateral branches, and farm manure, such as thin pancake fertilizer or urea water, should be applied once to cultivate the soil along the ditch to promote growth. After topdressing for 3 to 4 times, if the flower buds are thinned in time, they can generally become crown-shaped plump, leafy plants in the same year, and the seedlings will be raised with soil on a rainy day after autumn to avoid damaging capillary roots as far as possible. move to a place with plenty of sunshine and water and fertilizer to plant, water and fertilizer should be controlled after survival to enhance its adaptability. By comparison, under the same conditions, crape myrtle seedlings propagated by this method not only have developed roots and high survival rate after transplanting, but also are obviously better than other propagated seedlings in crown shape.

Large flower crape myrtle culture method detailed explanation!

Crape myrtle is often cultivated in the garden for viewing. Its wood is hard, strong in decay resistance, red and bright in color. It is often used in furniture, boat, bridge, electric pole, sleeper and construction. It can also be used as wood in water. Its wood economic value is said to be comparable to sleeve wood. Bark and leaves can be used as laxatives. Seeds are narcotic. The root contains tannin and can be used as an astringent. Today, I would like to briefly introduce the culture method of crape myrtle. Crape myrtle culture method chooses to transplant lignified seedlings in the field, and apply sufficient base fertilizer in the hole before planting. Young trees should be fertilized once a month for a long time, and pay attention to picking the buds and helping the stem. After growing up, the plant was fertilized twice a year, and phosphorus-based compound fertilizer was applied at flowering stage to facilitate flowering. The fallen leaves are trimmed once after dormancy in winter. Cut off the residual flower branches, fruit branches, over-dense branches, disease and insect branches, and apply base fertilizer (mainly organic fertilizer) around the base, which can promote the growth of the following year and bloom exuberantly. Diseases and insect pests are rare. Pests such as shell insects and other harmful branches should not be killed or sprayed with pesticides such as dimethoate as soon as possible. The selection of 5-20-year-old mother trees requires good growth, strong development, straight trunk, sturdy and free of diseases and insect pests. When the capsule changes from turquoise to yellowish red or light brown and does not crack, it is ripe and seeds can be collected. Seed collection is often appropriate between October and November of each year. Generally, the collected seeds can be classified and stored according to the flower color of the mother tree. If the seeds are small, they can be sowed evenly on the seedbed and sown 2g/m2-3g/m2. The seedbed should be drenched with water before sowing. The seeds can be sown directly. After sowing, cover it with fine sand or sun-dried rice stalks with a thickness of no seeds. Sowing can be carried out in spring and autumn, and it is generally the most suitable to sow and raise seedlings from March to April, when the time for seed germination is relatively short, and it can germinate in 15-20 days. Generally, new strains are cultivated by pressing strips. The time of pressing is usually from November of each year to February of the following year. First of all, in the whole nursery ground according to the row spacing of 40 cm, open 20 cm to 30 cm deep ditch, ditch with 2 cm to 3 cm of cow dung or horse manure as base fertilizer. Combined with winter and spring pruning, healthy plants with good varieties, colorful flowers and no diseases and insect pests are selected as mother plants, and fully developed annual or biennial branches are adopted, which are required to be 1 cm to 4 cm in diameter and unlimited in length. After soaking in clean water for 2 hours, they are buried obliquely along the ditch, then cover the roots firmly, and the upper part is pressed down along the ditch, covering the soil 10 cm to 15 cm thick, and watering once. Cover closely with plastic film to increase temperature and moisturize, cover 2 to 3 layers of grass to prevent frost, remove grass to increase temperature during the day in case of sunny weather, and cover it again in the evening. Matters needing attention in lantern bulb culture are treated in this way. Crape myrtle can sprout and grow in mid-March, and buds can be seen exposed to the ground in April. At this time, you can re-make a small arch shed covered with plastic film to remove the grass. If the temperature in the shed exceeds 30 ℃, it will be ventilated and cooled down. From the middle of March, the film should be opened every 20 days to cultivate the soil along the ditch, a total of 3 to 4 times, so that the base of the seedling from the original height to 10 cm high ridge, promoting the production of a large number of adventitious roots. At the end of May, the arch shed was removed and cut off according to the emergence of seedlings, and each bud became an independent seedling. At this time, lateral branches should be topped to promote the flowering of crape myrtle. And apply farm manure, such as thin pancake fertilizer or urea water, to cultivate the soil along the ditch to promote growth. After topdressing for 3 to 4 times, if the flower buds are thinned in time, they can generally become crown-shaped plump, leafy plants in the same year, and the seedlings will be raised with soil on a rainy day after autumn to avoid damaging capillary roots as far as possible. move to a place with plenty of sunshine and water and fertilizer to plant, water and fertilizer should be controlled after survival to enhance its adaptability. By comparison, under the same conditions, crape myrtle seedlings propagated by this method not only have developed roots and high survival rate after transplanting, but also are obviously better than other propagated seedlings in crown shape.

Propagation methods of courtyard flowers in March

Propagation methods of courtyard flowers in March

The highest temperature of this month is 27.6 ℃ and the lowest is 5 ℃, with an average of 6.4 ℃, which is in the period of cold and warm alternation.

Propagation of flowers in the courtyard

1. Sowing seeds

The courtyard flowers that can be sowed in March are: crape myrtle, bauhinia, Chimonanthus chinensis, Chimonanthus chinensis, red maple and Liriodendron chinense. The last five kinds of seeds should be soaked in cold water for 24 to 36 hours before sowing. The species of flowers and trees that can be sown and raised by sand storage are: cycad, ginkgo biloba, bamboo cypress, Luohansong, Pukui, purple magnolia, Michelia, sweet-scented osmanthus, seven-leaf tree, Phyllostachys pubescens, holly, pomegranate, Qionghua and so on. Feasible sowing herbaceous flowers are: impatiens, marigold, thousand-day red, hundred-day grass, a string of red, cockscomb, colorful peppers, winter coral, spring, mallow, purple jasmine, magnolia, asparagus, asparagus and so on. Some species that are not resistant to cold should be sown in a plastic shed.

Propagation methods of courtyard flowers in March

two。 Cuttage

The flowers and trees that can be propagated by cutting in March are: Fusang, geranium, epiphyllum, Arrow lotus, Portulaca oleracea, gemstone, stone lotus, eight immortal flowers, southern bamboo, sticking begonia, silver bud willow, hypericum, Luohansong, pomegranate, fig, star anise plate, gardenia, Admiralty, welcome spring, emerald, Ruixiang, torch fruit, etc., afraid of cold flower cutting in the shed or indoor.

3. Grafting

The flowers and trees that can be grafted and propagated in March are as follows: using 1-2-year-old black pine seedlings as rootstocks, abdominal grafting to propagate five-needle pine, Osaka pine, golden pine and so on; 1-2-year-old Magnolia magnolia and Magnolia magnolia seedlings as rootstocks; 1-year-old peach and apricot seedlings as rootstock to cut and propagate plum blossom, Birthday Bun with Bean Paste Filling, green peach, red leaf peach and so on. When the leaf bud grows to the size of the wheat grain, the fine varieties of wax plum ear strips are selected, cut and bagged to keep the moisture, and the survival rate is higher; using the trigonous arrow as the rootstock, the grafted propagation of crab claw orchid and all kinds of fairy balls should be carried out in the greenhouse. In addition, camellia, cherry blossoms, sweet-scented osmanthus and red maple can also be grafted and propagated in March.

Propagation methods of courtyard flowers in March

4. Pressing strip

The species of flowers and trees that can be propagated by pressing in March are: Camellia, Camellia, plum blossom, wax plum, red maple, Luohansong, Cuibai, straight cypress, Michelia mollissima, pedicel begonia, snowball, gardenia, sweet-scented osmanthus, purple magnolia and so on.

5. Ramet

The flower species that can be propagated in March are: orchid, walnut peony, one-leaf orchid, asparagus, iron tree, southern bamboo, ten meritorious works, tapestry begonia, tiger tail orchid, purple triangular leaf sorrel, big flower canna, gorgeous ginger, dahlia, crane orchid and so on.