Morphological characteristics
Deciduous shrubs or small trees, 3-8 (10) meters high; sapling bark yellow-green, smooth, old tree bark grayish brown. Branchlets slender, green, glabrous, branches, leaves with aroma. The top bud is conical and the outside is pilose. Leaves alternate, lanceolate, elliptic-lanceolate or ovate-oblong, 5-13 cm long, 1.5-4 cm wide, apex acuminate, base cuneate, green above, grayish green below, thin white powder, Both sides are glabrous, pinnately veined, lateral veins 6-10 on each side, slender, and midribs are raised on both sides; petiole length 0.6-2 cm, no hair. Umbels solitary or clustered on short shoots of leaf axils; stalks slender, 6-10 mm long; sepals 4, rigidly papery, margins lashed, inner surface densely white tufted; each umbel inflorescences 4 - 6 flowers, with first leaves open or opening simultaneously with leaves; pedicels ca. 1.5 mm, densely tomentose; tepals 6, broadly ovate; middle flowers fertile stamens 9, filaments distally hairy, third round stamen bases The glands are short-stalked and the degenerated pistil glabrous; the staminodes in the female flowers are pilose in the lower part; the ovary is ovate, style short, and stigma capitate. Fruit nearly spherical, 4-5 mm in diam., glabrous, green when young, black when mature; fruiting pedicels 2-4 mm long, apex slightly thickened; fruit tray shallowly discoid, ca. 2.5 mm in diam. Flowering period from November to April of the following year, fruiting period from May to September.
Original form
1. Fragrant wood ginger deciduous small tree, high 10m. Young shoots pubescent; terminal bud conical, outside yellow-brown pilose. Leaves alternate; petiole 1.5cm long; leaf blade ovate-elliptic or oblong, 7--14cm long, 2.5-5cm wide, apex acuminate, base cuneate slightly rounded, dark green above, glabrous, below pinkish green, sparsely Fur, slightly dense midrib. Dioecious; umbels axillary, often 4 clustered on short branches, each inflorescence with 4-6 flowers, first leaves open or open at the same time with leaves; perianth lobes 6, yellow-green or yellow-white, oval , About 2mm; fertile stamens 9, filaments grayish yellow pilose, anthers 4 rooms, are introverted. Fruit ball, diameter 5-7mm, apex with small pointed, mature black; fruit handle length 4mm, fruit tray does not increase, sparse pubescent. Flowering period of 2-3 months, fruiting period of September.
2. L. deciduous shrub or small tree, up to 4m. Young branch gray-brown, densely pubescent, deciduous when old; terminal bud conical, scales outside with pilose. Leaves alternate or connate at branch top; petiole is white pilose; leaf oblong-elliptic, 4-12cm long, 2-4.8cm wide, apex acute, base cuneate, dark green above, glabrous, only midrib Feathered, greenish white below, densely white pilose. Umbrellas axillary, often 2-3 clustered on short branches; flowers unisexuality dioecious, each inflorescence with 4-6 flowers, first leaves open or open simultaneously with leaves; perianth lobes 6, yellow, broad Obovate; fertile stamens 9, filaments pilose; degenerated pistil none. Fruit ball, diameter of about 5mm, fruit tray is very small, mature black blue, fruit stem 5-8mm long, sparsely pubescent. Flowering from March to April, fruiting from September to October.
3 wood ginger, deciduous small trees, high 3-7m. Slender branches. Leaves clustered on branches, papery, lanceolate or oblanceolate, 5-10 cm long, sinuately pubescent at first, then gradually smoothened; petiole hairy. Flowers unisexual, dioecious; umbels, composed of 8-12 flowers, shortly stalked; flowers open before leaf opening; gross sepals surface hairy, caducous; flowers yellow, pedicels small, 1-1.5 Cm, gill filamentous hirsute; tepals 6, obovate; anthers 4-loculed, valve split, all introrse, filaments finely hairy at base only; female flowers larger, with coarse hairs. Drupe spherulites, blue-black, ca. 7-10 mm in diam.; upper pedicel slightly enlarged. Flowering season 3-4 months. Fruiting period from August to September.
Variant species
Can be divided into two variants. One is the original variant f. cubeba. The second is the blunt leaf chicken (variant) f. obtusifolia Yang et PH Huang in Act. Phytotax. Sin. 16 (4): 46. 1978, which differs from the original one in the oblong or oblong oval Apex round or blunt, petiole short, 4-7 mm long, produced in Guangdong (Baoting, Hainan).
Biological characteristics: hi humid climate. Hi light, poor growth under conditions of insufficient light. Suitable for deep, well-drained acidic red soils, yellow soils, and brown earths in the upper layers, and not suitable for planting in low-lying areas.
Cultivation techniques: breeding with seeds or cuttings. Seed propagation: From the end of August to the beginning of September, the pericarp becomes purple-black, and the seed kernels are white and hard, and the seed is collected when the seeds are fully mature. The fruit is soaked, and the waxy layer attached to the seed shell is washed and stored in indoor wet sand layers. Seeds are stored and germinated in a winter season and sowed in February. Each 260-75 kg of 1hm can be germinated about 30 days after sowing. The germination rate is about 35%, and 7000-8000 strains per lhm2 of fertile seedlings. Cutting propagation: Choose a strong mother tree, take the annual branches, according to the spacing of 5cm, spacing 15cm in the spring cuttings, when the annual seedling height 50-60cm, you can transplant the garden. Planted in the early spring of February-March, planting density can be used 1.5m × 1.5m, 4800 plants per 1hm2, or 1.5m × 2m, and 3330 plants per lhm2. After the plant is filled, the soil is solid and watered.
Field management: During the period from transplanting to the second young plant, cultivating, weeding and top dressing should be conducted 2-3 times a year. After the third year, loosening should be performed at least once a year. After 1-2 years of late autumn or winter, at the height of 0.8-1.2m, the top of the trunk is cut to promote the growth of lateral branches and form dwarf forests for fruit picking. When entering the flowering stage, the gradual thinning of the male and female plants should be discerned. During thinning, one male strain should be kept at a certain distance for pollination, and 120-150 strains per 1hm2 can be reserved.
Pest control: Starscream, sprouting, spraying 20% ​​trichloric acaricidal WP 600 times twice in leaf stage, spraying 1 time Dimethoate 40% EC of 1000 times in flowering stage, increasing spray 1 time in 7-8 months, 40% dimethoate Emulsion 1000 times. Leaf leafworms, manually removing the leaves, sprayed with 80% of dichlorvos 3000 times.
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