Magnolia reproduction

1. Seed propagation Magnolia seeds matured from September to October in the north. When the fruit turns red and partially cracked, choose full and brightly colored seeds to sow. Magnolia seeds are rich in oil and can not be stored, so they should be sown with picking. As the red skin of the seeds has fragrance and is easy to be eaten by rats, it is necessary to mix the seeds with anti-rodent chemicals before sowing, or spread the seeds with one layer of river sand in wooden buckets or tanks and spread them layer by layer to maintain a certain temperature and humidity to accelerate germination. After the red skin is rotten and has no fragrance, put the budding seeds into the soil. You can also soak the fresh seeds in warm water for 3-5 days, often change the water, rub the wax layer, and sow the seeds after the crack.

The seedbed should be made into a high bed, 1.2 meters wide, 30 centimeters high and 30 centimeters wide. In the border according to the row spacing of 20 cm horizontal trench sowing, ditch culvert jelly rice, 3 cm soil cover after sowing, covered with straw. The seedlings can emerge after sowing in autumn for more than one month, remove the mulch in time after emergence, pay attention to shade, and often water to maintain a moist environment, strengthen management, remove weeds in time and top dressing, and then plant after cultivation.

two。 The propagation of high-altitude striping is suitable for tall or unbending plants. Select 1-3-year-old branches, peel 2-4 cm around, scrape off the cambium or longitudinally carve into a wound, wrap the cut with plastic, opposite bamboo tubes, earthen pots, etc., fill it with moss or fertile soil, tightly bind and fix it, often water and moisturize, and cut off into new plants after rooting. The pressing time is from April to May. The canopy with strong and luxuriant branches can be pressed early, and the crown with weak crown can be postponed by 1-2 months.

The rooting rate of inner chamber and lower branch pressing is higher. If the degree of Lignification is good, the rooting rate is high, and if the degree of Lignification is poor, the rooting rate is low. The striped branch peeling part can be directly coated with 0.01%ABT1 rooting powder solution. It can be cut off from the crown 3 to 5 months after pressing. The young roots of the striped seedlings cut are weak, and the survival rate is lower if they are planted directly. Pseudo-planting is an important technical link to catch the seedling rate of high-pressure strips, and the cut branches are trimmed according to the condition of root formation. The laminated branches with more roots leave 50 cm to 60 cm, cut off the top, remove branches and too many leaves, 5 leaves for each branch, and 20 cm for the branches with few roots, generally leaving no leaves or two or three leaves.

Choose a cool, fertile and loose garden. Make a 30cm high border and open 15cm to 20cm deep ditches to be planted. Remove the plastic film wrapped outside the soil mass and try not to scatter the soil mass as much as possible. The base of the pressed branch was immersed in the aqueous solution containing 0.005%ABT1 rooting powder for 1 hour and 2 hours, and then planted on the furrow at a distance of 20 cm. Pressing seedlings into the soil 15-20 cm, the root and soil should be closely combined. If the temperature is high, build a 50 cm high shade on the border. Strengthen the management of fertilizer and water, adjust the light on the border, and press the strong seedlings out of the nursery after 3-5 months.

Magnolia magnolia is a precious and rare tree species, which grows slowly and takes a long time to propagate. High-altitude striping propagation needs careful care and management, and the cold resistance of seedlings is weak, so necessary cold prevention measures should be taken during overwintering, such as wrapping rice straw, cultivating soil, building wind barriers and so on.