Eucommia ulmoides is a precious woody Chinese herbal medicine. To promote its development, we now introduce sowing and vegetative propagation. Seedling raising technology 1 Nursery preparation. Select a better slightly acidic soil nursery, turn over the base fertilizer in winter, after the freezing, in the spring and then make a bed. Generally, every 667m2 uses 150kg of cake fertilizer and 1500kg of manure. The seedbed can grow 15 meters wide, 1.2 meters wide and 30 centimeters high. 2 Seed germination. If seeds are sown in the middle or late March, half of the germination can be achieved earlier. Generally, the seed and sand are mixed in a ratio of 1:10. The humidity of the sand is hand-kneaded into groups, put in the degree of dispersion, and spread on a cool and ventilated floor in the room, with a thickness of about 30 cm, and keeping the species and sand moist. During the germination period, the indoor temperature is kept above 6°C, and the seed particles can fully absorb water and swell. When the saccharum is exposed at the top of the saccharum, the radicles can be sown in the entire nursery. Using low-temperature wet sand to germinate seeds, the germination rate can reach 80%, and the unearthed uniform and high seedling rate. If the time is tight, there is no time to use the wet sand to germinate, but also before sowing with 40 °C warm water or cold water soak germination, but the germination rate is only about 50%. 3 Ditching. Evenly spread 50-80 seeds, cover 2 cm of large mud ash after sowing, compared with dry land, it should also be covered with straw on the soil moisturizing. General 667 m2 seeding rate of 5-8 kg, germination of wet sand seeds 15-16 days after sowing buds unearthed. Temporarily soaking dried seeds will take 30 days to sprout. 4 Post-broadcast management. In the process of seed germination, we must always keep the bed moist, if the weather is dry, we can spray water properly; after the seeds germinate, we must remove the cover grass in batches. In order to prevent seedlings from getting blight, Bordeaux mixture can be sprayed once a week. When the seedlings have 2-4 true leaves, the first loose soil weeding can be carried out, and the thinning urea solution is topdressed once. The concentration is about 1%, and the fast-growing period of the seedlings is from June to August. At this time, the loose soil should be strengthened. 1 time. Fertilizer with a concentration of 2% can also be reconstituted with human waste. From September to October, in order to prevent seedlings from freezing in winter, the top dressing should be stopped, and the roots of the seedlings should be covered with a layer of fire and earth ash to improve the cold resistance of the seedlings. Asexual reproduction technology The germination power of Eucommia is very strong, vegetative propagation is the cutting method, the pile regeneration method, the wound germination method, the pressure propagation method, and the root propagation method. 1 cutting method. The choice of nursery should be shaded, moist, semi-sand or humus with more humus. The cutting time should be before the new leaves in early spring are not germinated. Before the general “shockingâ€, the new annual branches are cut and cut into 5 head bud cuttings. The upper one bud should be flush with the top cut surface, and the lower cut surface should be in a horseshoe shape. In this way, along with the cut into the seedbed, the depth is 2/3 of the cuttings, the spacing between the rows is 8-10 cm, and the spacing is 20-25 cm. After plugging in, we often keep the rammed soil wet, and we also need to put a shady shade in the hot season to keep it cool and moist, which will benefit the growth of new roots and weeding in summer and autumn. In addition to small additions, combined with topdressing, you can transplant them in the spring of the following year. 2 Retain the column. In May and June, during the summer to summer solstice, when cutting eucommia ulmoides trees, do not dig out stumps, because the stumps after harvesting can germinate and regenerate quickly. In this period, 30 to 40 days of felling can regenerate sprouts, and in July the felling takes place. It takes 60 to 70 days to sprout new seedlings, and some will sprout in the spring of October, but the tender seedlings germinated in October will easily die. Some tree stumps can shoot a few plants, and they should cultivate the soil at the root of the bud to facilitate the growth of new roots. In this way, they can be transplanted and transplanted in spring. 3 Injured germination method. Due to its strong germination power, Eucommia ulmoides can invade the main root of the tree and then cover the soil. It can also sprout long new seedlings (usually better before the convulsions). After one year, it can also be cut down. plant. 4 layering method. The branches of Eucommia seedlings are pressed into the soil with mud or bricks and stones before and after the rain in early spring. As long as the soil is moist, the humidity is suitable, and the depth is about 8 to 12 cm. The branches are slightly exposed, so that the shoots will sprout new roots. The second year will be Can be cut and transplanted. 5 root propagation method. In the seed nursery, dig the seedlings in the spring and consciously plant some of the roots in the soil, and then reorganize the original woodland. After germination, the seedlings will be dug for cultivation. 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