[Name] yucca filamentosa l.
[Alias] soft leaf yucca, yucca flash
[Classification] Liliaceae (liliaceae), yucca
[Flower (fruit) of] summer season
[Origin] Origin North America, is now widespread in warm regions for open field cultivation.
[Form] evergreen shrubs, short stems, leaf base clusters, spirally arranged leaves thick, 50-80 cm long, 4-7 cm wide, apex with hard spikes, leaves with wrinkles, dark green and is a small amount of white powder, strong straight Xieshen, margin smooth, old leaves with few filaments. In summer and autumn blooming flowers among the foliage from the bottom of the shaft, 1.5 meters tall upright panicles, cup-shaped flowers, drooping, white, green and white outer edge slightly blush, 8-10 cm in diameter. Spoon-shaped petals 6, 6 flat from the Health stamens, consisting of three triangular rod complex pistil, ovary superior. Capsule oblong-ovate, ditch 6, 5-6 cm long, not split.
[Character] Yucca tropical plants, of robust, easy to survive, adaptability to soil, can grow well in any soil. Likes sunny and well-ventilated, and extremely resistant to cold, suitable for open field cultivation in northern China. Yucca root system, strong vitality. Its leaves have a thick layer of cuticle and wax is, to reduce evaporation, so exceptionally strong drought resistance.
【】 The propagation and cultivation of sexual reproduction and asexual reproduction can be. Sexual reproduction get a lot of seeds, but in our country are mostly cultivated yucca "flowering untrue." The reason is the lack of insect pollination. There are two solutions: (1) artificial pollination, on a sunny day 8:00 to 16:00, take tweezers stamen, pistil pollen on the stigma painted. 2 During flowering, each flower petal cut two pieces, allowing free access of insects pollinating flowers inside. Asexual reproduction is in spring and autumn, the mother plant sprout on digging, transplanting or direct ramets take stems, stripped of leaves, cut into small pieces 10 cm long cuttings propagation.
Of strong, cultivation and management, no special requirements.
[Use] Mosaic both the United States and ornamental plants.
Yucca harmful gases such as sulfur dioxide, hydrogen fluoride, chlorine, ammonia, etc. and have a strong resistance to the absorption capacity. Tests showed that: In the daily average sulfur dioxide concentration of 0.15 ml / cubic environment, many trees such as juniper, heather, spring, Paulownia so severe damage symptoms, and yucca still upright robust. There are strong ability to absorb hydrogen fluoride yucca, it was determined, one kilogram of dried leaves can absorb 266 mg of fluoride. In addition, yucca on ammonia, ethylene has a certain resistance in areas of heavy pollution should vigorously promote the cultivation of yucca. |
