Breeding Management of Magnolia Magnolia (1)

This variety likes light and is not resistant to severe cold. Like fertile, moist and well-drained soil, grow poorly on too dry and alkaline soil and clay. The root is fleshy and afraid of stagnant water.

It can be propagated by ramet, striping, cutting and sowing.

The split plants can be carried out in spring and autumn, and the mother plants with dense branches can be dug out and planted respectively, and the roots and short branches can be trimmed.

The well-growing plants can be selected, and the 1-2-year-old branches with a thickness of 0.5 mi 1 cm are used as strips. If there is a branch, it can be pressed on the branch. The time of pressing is from February to March in early spring. After pressing, it took root in the same year, and the longer it was connected with the mother plant, the more developed the root system was and the higher the survival rate was. It can blossom 2-3 years after planting.

When the seeds are harvested when they turn red and crack in September, they will not germinate early, but they will fall off easily when they are picked later. After harvesting, the fruit with red outer seed coat was soaked and scrubbed in cold water, except for clean seed coat, the seeds were taken out to dry, stratified sand storage, and sowed in the next spring. It sprouted 30 days after sowing. The height of one-year-old seedlings can be up to 30 cm. Those who cultivate large seedlings are transplanted in the following spring, properly cut off the main root, re-apply base fertilizer, and control the density.

The cutting time has a great influence on the survival rate, which is usually carried out from May to June. The survival rate of cuttings of young trees in the same year was the highest. Soaking the base with 5% naphthylacetic acid for 6 hours can increase the rooting rate.

The seeding seedlings should be properly shaded in the midsummer season of 2 years after they are unearthed and should be protected against cold after winter. The root system will not be hurt when transplanting, the small seedlings should be stained with mud, and the big seedlings should be planted with soil balls, dig big holes and apply fertilizer deeply. Proper deep planting can inhibit tillering and is beneficial to growth. More phosphate fertilizer should be applied to acid soil. Topdressing before and after anthesis is particularly important, the former promotes flowers in full bloom, while the latter is beneficial to pregnant buds, and the period of topdressing is from mid-March to May.

Magnolia is not tolerant to drought and salinity and is afraid of flooding. It requires loose, fertile, moist and well-drained sandy loam. The ambient temperature is too high, the light is too strong, and the ventilation condition is poor. Soil consolidation and too much water will cause rotten roots and withered leaves to irrigate with insufficient acidity and high salt content, which will cause leaf yellowing and semi-withering.

In the north, you should choose the place where the wind is facing the sun. Transplant with soil balls so as not to injure and rot the fleshy roots. The planting time can be in spring and autumn, and the north should be planted after the land is thawed in spring. When planting, turn the soil deeply, apply rotten organic fertilizer at the bottom of the hole, cover the base fertilizer with a thin layer of soil, and then put in Magnolia to stretch the root system. Water thoroughly after planting. After planting survives, it is necessary to prevent drought in spring, pay attention to timely watering, prevent waterlogging in summer rainy season, discharge stagnant water in time, and do not water too much in autumn to make its growth slow or stop growing. It is beneficial to the maturity of branches and improve the ability to keep out the cold.

After blooming in spring, the long branches can be properly pruned, the long branches can be shortened-the nutrients are concentrated, and the dense flower branches, overgrown branches and withered branches are thinned, so that the tree shape is beautiful and the flowers are leafy.

Summer is the growing season of Magnolia. High temperature and drought not only affect vegetative growth, but also cause flower buds to shrink and fall off, affecting flowering in the coming year. Therefore, attention should be paid to irrigation and soil moisture conservation, especially in key scenic spots, and the soil should be kept moist frequently. Usually not short cut, so as not to cut off the flower buds, if necessary, can be thinned properly. The pruning period should be after flowering and before sprouting. Diseased, overdense, redundant, juxtaposed and long branches should be cut off. At ordinary times, sprouting should be removed at any time. Branches shorter than 15 cm when pruning are generally not pruned, while long branches are cut to 12 mi 15 cm. The cut should be smooth and slightly tilted, and the distance from the bud should be less than 5 mm. The healing ability of branches and stems of Magnolia magnolia is poor, and most of them are not pruned except those which are very necessary.

Magnolia can not only be planted in the ground, but also be planted in pots. The main points of pot planting are as follows: