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Fragrant mangosteen is a rare and precious tree in summer and autumn. It is an excellent tree species for viewing, greening, soil conservation and sand fixation. Since the introduction of foreign test plants for several years, it has developed rapidly. First, the biological characteristics of fragrant calyx fragrant flower buds butterfly flower legume trees, tree height 10 to 12 meters, trunk upright and straight, branches long sparse, bark gray brown to brown. Leaves alternate, 17 to 19 pinnate, elliptic to ovoid, smooth foliage, bright green, larger than the Locust leaves. From May to August, flowering occurs in southern China in spring, summer and autumn. The racemes grow into a pendulous shape, 8 to 12 cm long and nearly 10 cm. The beekeepers in our country summed up that “big flowers, large quantities of flowers, beautiful flowers, long flowering periods, rich aromas, and rich powder make it a good bee source for bee-keeping bees.†Shannon loves sunshine and air circulation. Excellent environment, but also resistant to the cold at minus 25 ~ 28 °C, in addition to Heilongjiang Province in China from the coastal plain to the altitude of 2100 meters high mountains, regardless of neutral soil, acid soil or light alkaline soil can grow well. From its adaptability, susceptibility to growth (both roots and shoots can be propagated), fast-growing (up to 2 meters in seedlings of the year), regenerative (multiple seedlings can be produced in the first year of burying and planting), and The economic and ecological values ​​of high quality powder source, ornamental, greening, sand fixation, and soil conservation determine its broad development prospects. Second, the breeding technology of fragrant buds fragrant buds have good flowers but do not bear fruit, no seeds for breeding, can only rely on buried root, cuttings or grafting for asexual reproduction. 1. Buried root breeding. This is the most important breeding method. The survival rate is 85% to 90%. 1 Preparation: Fragrant pods can be introduced into the seedlings after defoliation. Before planting, sand is buried and stored. Grasping the moisture content of the sandy soil must not allow the dehydration and dehydration of the roots, and it must not be too humid and mold rot. 2 Site preparation: Seedlings are best in sandy loam with deep soil, flat terrain, convenient irrigation and drainage, and no pests. Apply 2,500 kilograms of livestock manure per 667 square meters, or apply 50 kilograms of phosphate fertilizer and diammonium as a base fertilizer; use carbofuran and other insecticides to kill underground pests. The land should be deep-turned, fine-grained, and smooth, and the width should be about 1 meter. 3 nursery: nursery time in the south in mid-March, north in late March to early April. Select a 1-2 year old smooth root segment with a diameter of 5 to 10 mm free of pests and cut into 5 to 7 cm long spare. After the ditch is opened, the ditch is 50 centimeters long and the depth is 5 centimeters. Then the root segment is laid horizontally in the ditch with a spacing of 30 centimeters. Cover the fine sandy soil, pour the rooting water, cover the mulch, and the seedlings will emerge in about one month. 4 Seedling Management: Water shall be removed from the film immediately after emergence. In case of continuous rain, attention should be paid to drainage. During the seedling period, weeding should be done in time to eliminate lateral buds, loose loose topsoil, and not to injure tender and short roots. Prevent pests and diseases in a timely manner, appropriate amount of fertilizer, long drought is to clear the manure water drought and top dressing, and promote seedling growth and robust. 5 Transplanting and Management: The seedlings of Fragrans communis were transplanted and planted before the budding at the end of the autumn or in the spring of the following year. According to the plan, acupuncture points, basal fertilization, soil compaction after planting, and watering through the rooting water, the survival rate is generally more than 95%. After the fall, the height of the tree can reach 2 to 3 meters and the diameter at breast height 3 to 5 centimeters. In the second year of flowering, the flowers are bright, the aroma is assailant, and the tree shape opens. The gesture is beautiful and very cute. 2. Branch cuttings. 1 Cutting time is the same as that of buried seedlings, but it may be earlier. 2 Select a hardwood branch with a diameter of 8-20 mm, cut into 15 cm long cuttings, cut the upper incision, 1-2 cm from the bud, cut the lower incision into a 45-degree oblique mouth, 5 mm from the bud. Separate the upper and lower ends with 50 pieces of a bundle, and soak the lower end with 50 mg/kg rooting powder for 3 to 4 hours and remove them for later use. 3 Soil preparation requirements As before, insert the branches at an inclination of 45 degrees into the soil at a spacing of 20 centimeters and 40 centimeters, and cover the mulch. 4 Seedling Management: Immediately after emergence, seedlings, seedlings, and soil shall be closed to maintain the temperature and humidity of the bed soil. Before the high temperature, the plastic film shall be removed, the lateral buds shall be wiped off, and the fertilizer and water management shall be strengthened. Cutting seedlings can grow to more than 2 meters in the year. Fragrant mangosteen is easy to manage in the later period, and the production cost is very low. It is suitable for large-scale construction of apiculture, ornamental gardening, windbreak and sand fixation, and soil and water conservation.