Coral tree

Coral tree (Viburnum odoratissinum), also known as antidesma fordii (Guangzhou, Huiyang), Branches Straight, bark brown, with rounded lenticels, leaves opposite, oblong or oblanceolate, surface dark green light, back light green, green all the year round. Paniculate corymbs terminal, 3~4 month white bell shaped flowers, fragrant flowers; retreat with oval fruit, early orange, red purple black gradient, resemble coral, ornamental is very high, hence the name.
Coral tree
Native to Chinese, in India, Burma, Thailand and Vietnam distribution. Love is warm and humid and sunny environment, than the cold, a little shade, the best growth in the fertile soil of neutral. Coral trees resistant to strong firepower, can be used for forest fire barrier to soft wood hoe handle etc..

Coral tree Morphological character

The coral tree ( original variant ), is an evergreen shrub or Small trees , up to 10-15 meters; branchlets gray or gray brown, with a convex verruculose lenticels
 Coral tree line map Coral tree line map
Sometimes, glabrous or slightly brown tufted. Winter buds have 1-2 to ovate lanceolate scales. Ye Jizhi, elliptic to oblong or oblong obovate to obovate, sometimes nearly orbicular, 7-20 cm long, apex acute to acuminate and blunt, sometimes obtuse to suborbicular, base broadly cuneate, rounded edges of the upper thin, irregular sinuolate serrate or subentire, dark green above it shiny, glabrous on both surfaces or veins scattered clusters of micro hairs, sometimes scattered beneath the dark red micro gland, axillary vein often agglomeration tufted and toes webbed curved holes, lateral veins 5-6 pairs, and relatives before each network node, together with the midrib raised below and significantly; petiole length 1-2 (-3) cm, glabrous or puberulent by cluster. Panicles In the terminal or lateral short branches, wide spire, long (3.5-) 6-13.5 (3-) cm wide, 4.5-6 cm, glabrous or scattered tufted, total Pedicel Up to 10 cm long, flat, light yellow verruculose protuberances; bracts less than 1 cm wide, less than 2 mm; fragrant flowers, usually in the order of second axes to grade third branches, sessile or short stalk; calyx tube campanulate, 2-2.5 mm long, glabrous, calyx A dish, facewidth triangle; corolla white, becoming yellowish white, sometimes reddish, rotate, a diameter of about 7 mm, tube ca. 2 mm, lobes reflexed, ovate, apex rounded, 2-3 mm long; stamens slightly beyond the corolla lobes, Anther Yellow, oblong, nearly 2 mm; stigma capitate, not higher than calyx teeth. Black fruit red, ovate or ovate elliptic, ca. 8 mm, 5-6 mm in diameter; nucleus ovate elliptic, rounded, ca. 7 mm, ca. 4 mm in diam., there are 1 Deep ventral groove. Florescence 4-5 month (sometimes irregular flowering), Fruit ripening During the period of 7-9 months.

Coral tree Growth habit

Coral tree like warm, slightly cold, light a little shade. In the neutral soil moist and fertile in the rapid growth of demand, it can adapt to acidic or slightly alkaline soil. Root, sprout strong, cut resistant, strong resistance to toxic gases.

Coral tree habitat distribution

Southeast Fujian, southern Hunan, Guangdong, Hainan and Guangxi. Xiangyang or flat shrub jungle streams in valleys near shade, woodland, elevation of 200-1300 meters. Often cultivated. In eastern India, northern Burma, Thailand and Vietnam have distribution.

Coral tree Variety classification

 Japanese coral tree Japanese coral tree
Japanese coral tree (varieties) Viburnum odoratissimum var. awabuki (K. Koch) Zabel ex Rumpl.
Leaves obovate oblong to oblong, rarely obovate, long 7-13 (-16) cm, tip obtuse or acute narrow and blunt, base broadly cuneate, margin often has a regular wavy shallow crenature, lateral veins 6-8 pairs. Panicles with two young leaf usually in the top technology, 9-15 cm long, 8-13 cm in diameter; corolla lobes 3.5-4 mm long, 2-3 mm long; the style is fine, ca. 1 mm, stigma often higher than calyx teeth. Pyrenes usually inverted ovate to obovate elliptic, 6-7 mm long. Other characters with coral tree. Florescence 5-6 month, 9-10 month fructescence.
Zhejiang (Putuo, Zhoushan) and Taiwan. The lower reaches of the Yangtze River around the common culture. Japan and South Korea have distribution.
Is a very ideal Landscaping Because the tree had stronger resistance to soot and toxic gases and the absorption capacity, especially suitable for the city as a hedge or landscape vegetation.
 Yunnan coral tree Yunnan coral tree
Yunnan coral tree (varieties) Viburnum odoratissimum var. sessiliflorum (Geddes) Fukuoka
Similar to Japanese coral tree var. awabuki, but the bracts large, 2 cm long, 5 mm wide, large fruit, nuclear ovate elliptic, ca. 9 mm.
South Yunnan (Xishuangbanna). In forests or shrub forest margins, 900-1600 meters above sea level. Located in Burma and Thailand.

Coral tree cultivation techniques

Coral tree Before planting

Nursery selection
The nursery should be Xiangyang, convenient transportation, convenient irrigation and drainage area, drainage ditch road electric facilities. Flat terrain, deep soil, Fertile and good drainage, adequate light slightly acidic to slightly alkaline (pH6.5~7.5) of sandy loam or loam soil, underground water level in place below 1.5m.
Soil tillage
1, preparation
Nursery to do careful preparation in the nursery, fine roots, weeds, roots, soil improvement, improve soil fertility, soil water conservation, create an environment for the growth of seedlings. In the winter to three till three in harrow, depth of 25~30cm, the spring to two till two rake, ploughing depth should be 20cm.
2, soil improvement and processing
(1): the soil barren soil annually organic fertilizer, acidic soil, lime ash, appropriate bone alkaline soil to adding acidic fertilizer, viscosity soil to sand loam, sandy soil to increase the partial fire soil. "
(2) soil treatment: seedling to soil before disinfection and its treatment, sterilization used ferrous sulfate 300~450kg/hm The application of 20d in the plug, or zineb 22.5~30kg/hm The amount of fine soil, mixing, made of toxic soil, and pest control in soil; available 50% phoxim 20kg/hm Mixing, fine soil, made of toxic soil in soil, and.
3, shizujifei
Make the bed before applying decomposed organic fertilizer 15000~30000kg/hm Application of 1500~2250kg/hm, or rotten cake 375~750kg/hm, phosphate and compound fertilizer That combination of ploughing into the cultivation layer.
4, make a bed
According to the specifications of seedbed management requirements and surrounding conditions, general seedbed width 100~120cm, bed height 20~30cm, aisle width 45~50cm, seedbed long depending on the situation, the general 10~20m. To make a bed to bed for good, smooth surface, Central than on both sides, so as to avoid local water.
5, weeding
The bed was ready on the soil surface (bed and aisle) injection harness 1125~1350mg/hm To kill weed seeds. The soil should be kept moist after spraying, in order to ensure efficacy. If it rains so as to avoid the occurrence of injury after applying attention to drainage.

Coral tree Cultivation method

Coral tree breeding mainly rely on Cuttage or sow breed.
All the year round, the spring and autumn season two is good, fast rooting and high survival rate; the main method is to choose strong, tall and straight stems, in
 Coral tree Coral tree
5~6 and 15~20cm long clipping mature branches, inserted in the bed or sofa, after inserting 20~30d transplanted into nursery rooting in autumn.
Plug the seedbed spraying water. After cutting first weeks every day spray 5~6 times, each second 10min water, water every day of the week 3~4 times, third, 4 weeks after the appropriate water every day according to the weather condition number, the humidity of the air inside the bed remained above 90%, the matrix temperature maintained at 20~25 DEG C, the temperature is kept at 25~30 DEG C, the cutting fluid spray with tuzet early 0.1% of the 2 times, in order to prevent rot rotten leaves, shading coverage rate of 50% of the net, in order to reduce sunlight, avoid the bed temperature is too high.
August autumn or winter seed, sand in the spring, 30~40d after sowing can germinate into seedlings.
In the annual 3~4 month, dug up the seedlings with seedlings to old territory transplantation, the ball must be with the seedling transplantation, transplantation with, after transplantation must be poured enough water. In dry year, must be watered often, in order to ensure the survival, survival after dressing 1~2 times, to promote the growth of seedlings. In addition, also should pay attention to the annual pruning, pruning can be carried out according to the green wall, green corridor, hedges, etc.. Potted coral can be bred seedlings within the basin and then watering, cylinder, fertilizing, pruning, shaping and other daily management work.

Coral tree management and maintenance

Coral tree growth, a large amount of water, should choose fertile, moist soil cultivation, planting early enough water, according to the soil or weather conditions or proper watering irrigation. According to the growth situation of irrigation should be the local climate, site conditions, soil moisture content and seedling flexibility, by pouring, spraying and pouring water and other measures should be made sooner or later. Early seedling growth 4~5 months to a few times, the fast-growing period 6~8 month disposable drenched, late growth seedlings to control irrigation, in addition to the special drought, generally not irrigation.
Weeding scarifier
Weeding must grasp the divide early, with the exception of a small, in addition to and does not damage the seedling nursery element principle, keep weeds, artificial weeding in the rain or irrigation. Actively promote the chemical weeding, aisle or available Roundup glyphosate, but to prevent spraying seedlings. Gramineous weeds early grass tender, can use Gaicaoneng or quezalofop-p-ethyl, first use of herbicides, should first test before use, to avoid injury. With songtu weeding, 4~6 times a year, from shallow to deep soil, seedling root, plant near 5 shallow, deep lines.
Apply fertilizer
The rainy season deep fertilizer is about 750kg/hm About 300kg/hm, urea . A year after 5~8 months of urea applied in several times, adequate supply of water and fertilizer, vigorous growth.
Coral tree sprout strong, can naturally form the drum shaped crown and branches are not easy to die, generally without pruning. Such as hedge, to trim 2~3 times in the spring before germination and growth season.

Coral tree Pest control

Coral root rot, black rot with 10% antimicrobial agents 401 acetic acid solution 1000 times liquid spraying or pouring control, stem rot and leaf spot and spot available 75% chlorothalonil WP 600 times liquid spray control.
The main pest coral tree serious pests are the main pest and slugs, such as shoe, icerya scale, pseudococcus COMSTOCKI, Thosea sinensis etc..
1, manual control
With the winter or early spring pruning, cut worm branches burned, in order to reduce the overwintering population. The individual branches or leaves on the scale insects, the available soft brush gently brushing, or with a brush dipped in kerosene with killing etc.. Class can use Eucleid adult phototaxis, setting of ultravioletlighttrap for adults.
2, drug prevention and treatment
In the early instar insect hatching period (year 2~4 month), can contact insecticide spray, such as 2.5% deltamethrin (disashi) 3000~5000 times liquid, 80% dichlorvos, 50% fenitrothion EC 3000 times liquid, every 7~8d spray 1 times, can achieve a good control effect on insect parasitic urinary fixed; wax hazard (annual 2~4 month), to control methods of scraping and smearing Systemics or gensch, watering, commonly used insecticides for 50% phoxim EC 5~10 times. Moth larva resistant weak, available 90% trichlorfon, dichlorvos, phoxim 80% EC 50% times liquid spraying 1500~2000; also available a pyrethroid pesticide 5000 times liquid spray. The red spider available 20% three chlorine sulphenone WP 1000 times liquid spray control, aphids, leafhoppers, coccoiol available 5% fenitrothion EC 1000 times liquid spray control.

Coral tree The main value

Coral tree Medicinal value

Root, bark and leaf (Sha Tangmu): Xin, cool. There is heat dampness through the meridians, the function of badushengji. For a cold, traumatic injury, fractures.
chemical composition
Coral tree contains two terpenes, three terpenes, sesquiterpenes, flavonoids, lignans and coumarin compounds etc..

Coral tree Landscaping

Coral tree flourish, the shielding effect is good, and cut resistant, so it is widely used in green, red coral, shaped like a gorgeous cute. Alexandra
 Coral tree fruit Coral tree fruit
Coral tree in the garden in the renovation for the rules often green wall, green, green corridor, the natural garden in solitary clump planting decorative wall, hidden for shelter. Along the wall in the garden planted coral tree, with its natural shape instead of decorative brick, glazed background to build up the soil, can produce the effect of "garden vaguely on the Luo", not only in the ornamental is natural and lively, and expand the sense of space landscape. In addition, because the coral tree has strong anti poison function, can be used to absorb toxic gases in the atmosphere.
Road Greening
The general standard of road greening tree species selection: strong adaptability, long service life, fewer pests, strong dust, wind resistance, strong resistance to pruning is adorable, and can control the growth of trees; clean, no thorns, no pollution etc.. Biological and ornamental characteristics of coral tree good, meet the requirements of road greening. Especially with anti smoke, dust, noise reduction of windbreak effect, can improve the ecological environment and living environment. In the garden tour trail step can be made into hedge organization flow. The leaf area index of coral tree is dwarf Lagerstroemia indica were 10 times higher than the green leaf color, amusing, stable shape plasticity, shading block tight, can purify the dust exhaust, commonly used for city road or highway greening isolation belt. It is often cut into various shapes used in road greening, form a beautiful scenery.
Public green space
Coral tree is widely used in the public green space. As the scenery, such as coral tree and Heather together cut into a high fence, which can be placed in a park or scenic garbage or in front of the toilet "B significantly impaired beauty"; in the garden is arranged in the middle office, staff activity area and tourist activities in the area, avoid visitors enter or disturb, forming a barrier; and other Joe and irrigation, ground cover plants and plant to define the boundary of the courtyard, and commercial street parking, separate field, city roads and highways, enhance the courtyard comfort and warm feeling, such as Australia Canberra building to use of the courtyard coral tree, eucalyptus, acacia trees form a plant wall barrier, very beautiful; as some architectural pieces, sculpture landscape background; or cut into various shapes of the hedge, used to restrict people's behavior or organizational flow; also can be used for building foundation planting or clump planting decorative wall.
The greening of industrial and mining enterprises
Not only has the strong ability of coral trees to absorb a variety of harmful gases, and the adsorption of smoke and dust is also very obvious, according to the determination of dust amount of coral tree per year for 4.16t/hm That is far greater than the evergreen Euonymus japonicus, oleander etc.. In addition, the coral tree leaf hypertrophy resin containing more water, less, not easy to burn, can be used as fire barrier between the industrial and mining enterprises plant zone, is an ideal species for greening of industrial and mining enterprises.