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Magnolia can be bred with seeds and seeds, and seed breeding is the main method. The seed propagation method is described as follows:
1. Select seed and seed treatment Select robust Magnolia officinalis as a parent seedling. When the fruit scales show red seeds in October of each year, remove the fruit and keep the seeds full and disease-free. . Magnolia seed has a solid outer shell and is covered with wax, which is not easy to absorb moisture. In order to promote seed germination, seed treatment is performed prior to sowing. Method is: 1 the seeds with cold water (20 °C ~ 25 °C warm water better) soak 2 ~ 3 days, remove and put into bamboo baskets, stepped on the basket with their feet, while stepping on, wash their skin. After removing the skin, wash the seeds with warm water, remove and dry them. 2 Mix the seed with coarse sand and rub it several times by hand. After removing the skin, sow.
2, sowing method Magnolia generally sown in October to December, before and after the "winter solstice" (Sichuan, Hubei more in late February sowing). Prior to planting, choose nursery gardens that are half-cast, half-yang near the afforestation site, well-drained, and fertile. In the first year of winter, plowing 25 centimeters deep, after weathering, in the spring of the second year, the soil blocks will be shattered, and 2500 kilograms of wood ash or 1000 kilograms of manure water per mu, or 800 kilograms of cattle manure, and then the soil will be turned to the ground 1 time. Loose soil, fertilizer and soil mixing. After the fine leveling, the height of the raft is 15-20 cm, width is 100-120 cm, and a good drainage ditch is opened around. After the seedlings get up well, they are placed in a row at a distance of 20 cm with a ditch depth of 3 cm, a plant spacing of 10-15 cm, and a 6 cm shallow ditch is opened with a hoe. The good seeds are evenly planted in the ditch, covering the soil 2 to 3 cm. Cover a layer of grass with a proper amount of water to keep the soil moist.
3. Management of Seedlings Magnolia officinalis seedlings were sown in March of the second year after sowing. After the emergence of the seedlings, they must be promptly removed. When the seedling height is 6 to 7 centimeters, 1,000 kilograms of diluted human excrement is applied per acre to promote seedling growth. After May, shady shelters will be used to grow seedlings. Between June and June, 3 to 4 kg of urea was used to redistribute water once more. When the weather is dry, pay attention to watering to meet the needs of seedlings for water; during the rainy season, pay attention to drainage to prevent the occurrence of root rot. Seedlings can be transplanted after 1 year of cultivation.
4. Selection and Arrangement of Afforestation Sites Chuan-ho-Peng afforestation sites should be selected in the mid- and high-altitude slopes with an elevation of 800 to 1,700 meters. The Magnolia officinalis should be selected in the low-altitude area of ​​600 to 800 meters above sea level. To the sunny slopes, the soil is deep, fertile and moist, and neutral to slightly acidic sandy loam rich in humus is preferred. After the selection of afforestation sites, the first winter season will be carried out with a full-fledged or banded rake, picking up the roots and stones within the site, breaking up the clods, spacing 3 meters apart, digging holes 60 centimeters wide and 50 centimeters deep, weathering over a period of time. Afterwards, apply 10 kg per manure fertilizer or soil fertilizer as base fertilizer, mix the soil and fertilizer to be planted.
5, transplant Magnolia generally in the late autumn leaves to early spring in February before the "rain" transplant. At the time of transplantation, the seedlings were picked up and the main roots were cut short, one for each hole. When putting seedlings, pay attention to the natural extension of the roots. When half of the soil is covered, gently lift the seedlings upwards, then cover the soil with full holes, practise the water thoroughly, and then cover with a layer of loose soil and weeds. In order to make full use of the land, it can be interplanted with beans, corn and other low-grade herbs during the first 5 to 6 years of planting (it should not be close to Magnolia officinalis in order to prevent its growth.)
Magnolia in the afforestation area is generally not fertilized, where the conditions are appropriate, the appropriate amount of compost, miscellaneous fertilizer can be applied every winter, or appropriate amount of urea can be applied in the spring to promote the growth of seedlings. Diseases of Magnolia officinalis are mainly leaf blight and root rot; insects are brown cattle, and attention should be paid to prevention and treatment. Houpu can be harvested after 15 years of cultivation.
Magnolia seed reproduction was
Magnolia officinalis and Eucommia ulmoides and Phellodendron amurense are also known as "Sanmu" medicinal herbs, and they are used to dry dry skin, branch skin and root bark. It has the function of dampness and full of gas. For the treatment of abdominal fullness, vomiting, diarrhea, phlegm cough and other embolism, widely used, known as the raw material of magnolia as a raw material formula in 200 or more. Recent research has also found that Magnolia officinalis has antibacterial, anti-ulcer, antispasmodic, anti-allergic, anti-muscle relaxation effects. Magnolia has been classified by the country as a second-class protected plant and second-class protected Chinese herbal medicine.