How to cultivate magnolia trees? How the magnolia tree is cultivated

The propagation of magnolia, purple magnolia and other magnolia species is commonly used by sowing, grafting, cuttings, tissue culture and other methods.

1 sowing must master the maturity period of the seed, when the follicles turn red and crack, that is, pick, early harvest does not germinate, late harvest is easy to fall off. After picking the follicles, the fruit with the red outer seed coat is soaked and scrubbed in cold water, the outer seed coat is removed, the seeds are taken out to dry, and the sand is stored, and it is sown in February and March of the following year, and the annual seedling height can reach about 30 cm. Those who cultivate large seedlings should be transplanted in the next spring, properly cut the taproot, reapply basal fertilizer, and control the density, and the qualified seedlings with a complete crown, rare flower buds, and a plant height of more than 3 meters can be cultivated in 3 to 5 years.

After 2 to 3 years of planting, it can enter the full flowering period. This kind of seedling grows vigorously and adapts strongly, and its effect is no less than that of grafted seedlings.

2 Grafting Usually the rootstock is made of magnolia, magnolia and other magnolia plants, the methods include cutting, splitting, ventral grafting, bud grafting, etc., the survival rate of cleaving is high, and the growth is rapid. The survival rate of late autumn grafting is more guaranteed than that of early spring grafting.

3 Cuttings This is the main method of propagation of magnolia. The time of cuttings has a great influence on the survival rate, which is generally carried out in May and June, and the survival rate of cuttings is the highest in the year of young trees. Soaking the base with 50 ppm naphthalene acetic acid for 6 hours can improve the rooting rate.

4 Strip pressing is a traditional breeding method, which is suitable for the preservation and development of famous and high-quality varieties. Magnolia is the most suitable to use this method, select well-growing plants, take 1 2-year-old branches with a thickness of 0 5 cm l cm as a pressing strip, if there are branches, you can press on the branches. Stripping time 2 3 months.

The longer the root is connected to the mother plant, the more developed the root system is, and the higher the survival rate. It can bloom 2 to 3 years after planting.

5 Tissue culture In recent years, the tissue culture method has been used to use the buds of the two arborvitae as explants, and the culture has been successfully cultivated in test tubes. This approach is of particular significance in the preservation and development of new types that have been bred by budding and hybridization.

Cultivating magnolia trees has a long lifespan, the root system is developed and complete, it is not suitable for bare root transplantation, and soil balls should be brought when transplanting, so when planting, it is necessary to recognize that there is no good choice of location, and do not move easily after planting. When cultivating magnolias, it is necessary to choose a leeward and sunny place, warm and moist, and shaded on the side. The soil requirements are not strict, and the slightly acidic or slightly alkaline soil can be adapted, and the neutral sandy loam soil with good drainage is suitable.

When planting, each hole should be applied with several shovels of rotted compost, and after planting, it should be watered several times.

In the first two years after planting, it should be protected from cold and wintered. Magnolia prefers fat, but avoids big fat; During the growth period, it is generally possible to apply fertilizer twice to facilitate flower bud differentiation and promote growth. Dry pants are applied once in early spring, and again in May and June.

The fertilizer is mostly well-rotted organic fertilizer. Newly planted seedlings do not need to be fertilised, but can be fertilised after the leaves have fallen or the following spring. Magnolia's root system is fleshy and intolerant to stagnant water.

During the flowering and growth period, it is advisable to keep the soil slightly moist. People should reduce watering after autumn to delay rooting and promote the maturity of branches to facilitate overwintering. Water is generally not watered in winter, only once when the soil is too dry.

Magnolia branches have poor wound healing ability, so they are generally not pruned. However, for the sake of the reasonable shape of the tree, long branches, dead branches, diseased branches and branches that hinder the appearance of the tree should still be cut at the beginning of leaf development.

In addition, after the flowering, if no seeds are left, the residual flowers and pod fruit ears should also be cut off, so as not to consume nutrients and affect the flowering of the next year. In the growing season, red butterflies are harmful and should be prevented in time.

If you want to plant magnolia seedlings, it is best to do so in March-April in the spring. The weather during this time is warm, which is suitable for the growth of young trees. In addition, the sap in the young tree flows faster at this time, so it can grow quickly.

If you don't have time in the spring, you can plant around August or September.

1. Soil selection: When planting it, it is advisable to choose a planting site with thick soil, good drainage and weak acidity. Before planting, the soil should be turned to increase the air content in the soil and facilitate the growth of young trees.

2. Select saplings: When planting, it is advisable to choose saplings with relatively thick branches and diseased leaves and branches for planting. Because this kind of seedling grows well, it has a high survival rate.

3. Planting in the sales hall: first dig a planting pit that is slightly larger than the soil ball carried by the sapling at the planting site, and then plant the sapling into it with the soil ball, and fill the pit with flower soil. Subsequently, water once to wet the soil. Slow posture.

4. Post-maintenance: After planting, it is necessary to provide an appropriate amount of sunlight, and replenish water in time before the flower soil dries out. After about 3 days, it will be able to start growing.

Magnolia, also known as white orchid and yellow horn orchid, is an evergreen tree with a strong fragrance of flowers. Its leaf color is verdant, the flowers are white like jade, fragrant like an orchid, the flowering period is long, and when the environmental conditions are suitable, it can bloom continuously all year round. However, it is afraid of drought, waterlogging, cold, and alkali, and is regarded as a delicate and difficult flower to raise in the northern region.

First, the moisture should be appropriate. White orchid is a fleshy root, the potting soil is too wet, the leaves will wither and fall off, and even rot the roots to death, too dry and will wither the tip of the leaf, it is a flower that is afraid of both waterlogging and drought. When the petals are too open during the flowering period, it means that the water is insufficient, and the water is suitable for the bracts; When the surface of the potting soil is dry, and the soil is hard and cracked, it should be watered immediately.

Watering requires that the water temperature and soil temperature must be consistent, and cold or hot water cannot be poured suddenly. Watering must be done thoroughly, often watering half of the water will trigger shallow roots. White orchids should not be watered too much in spring and autumn, watered every day in midsummer and must be watered in the evening, reduce the amount of watering in late autumn, and water once every 10 days in winter.

During the rainy season, move to a sheltered place.

Second, fertile, loose, well-drained culture soil is required. It can be prepared with 5 parts of pine needle humus, 2 parts of coarse bran ash, 2 parts of coarse sand, and 1 part of ripe manure, and avoid using fine sand or clay soil with poor air permeability. On the pot, use a well-ventilated tile pot (plain pot), avoid glazed pots, porcelain pots, purple sand pots, etc., it is best to use a deep cylindrical flower pot, and use a brick to empty the pot, in case of poor drainage; The bottom of the pot is covered with about 5 cm of slag and gravel.

3. Fear of alkali. White orchids prefer acidic soils, and the requirements for soil pH are:

In the northern region, white orchids are not easy to raise, because most of the water and soil there are alkaline, which dissolves the protoplasm of white orchid cells, resulting in stunted flower development and poor growth. Frequent watering with fermented rice washing water has a better effect.

Fourth, afraid of thick fertilizer. White orchids like phosphorus and potassium fertilizers, but avoid excessive concentration, otherwise they will produce reverse osmosis and cause plants"Physiological drought", wilted at the lightest, burned to death at the worst. The fertilization principles of white orchids are:

Rare, often, and evening"。Practice has proved that with thin human feces and urine, soybean cake water, mixed with smashed fish offal, rotten shrimp, chicken offal, etc., after cooking, according to the ratio of fertilizer and water 1:9, once every 3-5 days, and then mixed with calcium sulfate when applied, the effect is better, and the fragrance of white orchid can be strong.

Magnolia tree planting points:

1. When planting magnolias, soil balls should be brought, and bare roots are not easy to survive.

2. Spring planting should be carried out before the flowers and leaves, and autumn planting should be in late September.

3. Before winter, cut off the peripheral roots that are ready to be transplanted in the next year, and the root wounds can be healed and some new roots can grow during transplanting. A portion of the leaves should be removed before seedling emergence to reduce evaporation. Organic fertilizer should be applied to the planting hole to promote the formation of the plant as soon as possible.

After planting, make a tree pot, water it once a day for three consecutive days, and loosen the soil in the pot on the fourth day to protect moisture.

4. Magnolia is native to the Yangtze River basin in China, and has a certain limit of cold resistance.

Magnolia trees grow to be both afraid of drought and waterlogging, and if the soil is too dry, it will cause leaf rolls. Its repentant root is a fleshy root, if it is too wet, the root will rot, and the leaves will wither, so the amount of watering must be strictly controlled. If you find that the soil is dry, you should water it in time and water it thoroughly.

When planting magnolia trees, it is necessary to choose loose soil, fertile and good drainage performance of the cultivation soil, pine needle humus, coarse bran ash, coarse sand and manure with poor ripening and bending according to 5:2:2:

1 ratio for mixed preparation. Be careful not to use clay soil and fine sand with poor air permeability.

Magnolia trees prefer acidic soils, so they are not easy to cultivate in the north. It likes phosphate and potassium fertilizers, but the concentration must not be too high, otherwise the plant will wilt and may even burn to death. Fertilization should be applied by tasting, sparse and evening, once every 5 days, so that the growth can be very robust.