Picea koraiensis
Aliases: red skin smelly, tiger tail pine, Korean spruce, Dailing spruce
Scientific name: PiceakoraiensisNakai
Families and genera: Picea of Pinaceae
Distribution: 1400m above sea level in Xiaoxinganling, Jilin Mountain area of Northeast China. It is also produced in Wusuli, North Korea and Soviet Union. More resistant to shade, shallow roots. It has strong adaptability and can grow under different site conditions except swamp zone and dry sunny slope and ridge in the distribution area.
Morphology: evergreen trees, crown steeple-shaped, large branches obliquely extended or spreading, obvious needle-shaped leaf pillows on branchlets; annual branches light reddish brown or yellowish brown, glabrous or few glabrous, or densely pubescent; buds long conical, branchlets base persistent at the apex of bud scales often reversed. Leaf cone-shaped, apex tip, multi-radiation extension, cross-section diamond, stomatal lines on all sides. Cones ovate-Terete or Terete-orbicular, 5-color 8 cm long, green-yellow brown or brown after ripening; seed scales thin woody, triangular-Obovate, apex rounded, partly glossy, often smooth, without conspicuous longitudinal lines; bract scales very small; seeds with membranous long wings at the top.
Ornamental characteristics and garden uses: this tree species has graceful posture, cold tolerance and humidity tolerance, and grows faster than Liaodong fir. It is more suitable for Beijing style and soil than Liaodong fir, and can be popularized as a single tree in Beijing area.
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Cultivation and Management of Phalaenopsis
1. Plant material: plant material should be put at the bottom of the basin when planting, at least 1 to 2 pots. The material is made of water moss (suitable for medium and small seedlings), whole snake sawdust and snake sawdust plus water moss or half of snake sawdust and charcoal particles, and the effect is very good. Others such as vermiculite, cement charcoal soil, Alsophila spinulosa root, coconut shell grains can also be used as plant materials. two。 Watering: Phalaenopsis is native to primeval forests with high humidity. And there is no thick pseudo-corm to store nutrients and water. Therefore, Phalaenopsis should be cultivated and maintained in an environment with high ventilation and humidity. The optimum humidity during the day is
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Control of thick plum cone rust of spruce
Spruce thick plum cone rust occurs in Inner Mongolia, Jilin, Heilongjiang, Sichuan, Yunnan, Xizang, Shaanxi, Gansu, Qinghai, * and other places in China. The disease harms thick branch spruce, yew spruce, Lijiang spruce, oil wheat spruce, fish scale spruce, Xueling spruce, * spruce and so on. Symptoms: the disease harms the positive scales of female cones. The susceptible scales are twisted, anti-curled and disordered. There are many purple-brown globules on the front, which are arranged in a layer, which are the sporidium of the pathogen, and sometimes the spores are also produced on the back of the scale.
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