Guangyulan: coop one science and morphological characteristics。
Guangyuland (student: *screen grandiflora*), also known as yogyakarta and yugyuland, belonging to mulanko mulan, is a common green wood, originating in south america, with extensive seeding in the yangtze river basin and south of china. Its tree height can be as high as 30 metres, its bark is pale brown or gray, and its small branch is thick; it has a tectonic ellipse of leaves, 10-20 cm long, with a dark green surface and rusty fur on its back; it is as big as a flower, 15-30 cm in diameter, white aromatics, with a five-july period; and it is a polymerite cylinder, seed red, mature from september to october。
Ii. Lifestyle:
Environmental adaptation: the climate is warm and humid, it is more cold-resistant and it is short-term resistant to low temperatures of 19°c. The light is bright, the tree is dyslexic, and the adult tree needs sufficient sunlight, but in the summer it needs to be protected from strong light burning of the trunk. Soils are suitable for deep, fertile, well-drained micro-acid or neutral soils, and subject to alkaline soil and water flooding, which otherwise tends to fertilize or rotting roots。
2. Resistance and growth characteristics: high resistance to pollution, high resistance to harmful gases such as sulphur dioxide, chlorine gas and soot, suitable for urban greening, deep roots and strong wind resistance; medium growth, long life and fewer pests。
Distribution and uses:
Distribution: china is located mainly in the yangtze river basin and in the south-east of the country (e. G., jiangsu, zhejiang, anhui) and in the north (e. G., beijing, lanzhou)。
→2. Main uses: gardens are green, trees are strong, seasons are often green, flowers are fragrances are often used as side trees, shades or landscape trees。
Environmental values: absorption of harmful gases, air purification, ecological benefits。
→4. Value of medications: accelerants can be drugged (the chinese drug "silent") to relieve nasal headaches。
Iv. Elements for enforcement and mainity:
→1. Deplantation and reproduction: optimal transfer time: in the case of early spring hibernation or the meadow season, earthballs are 8-10 times the chest length to protect root systems。
2. Reproduction methods: indoctrination is common (the wood is mostly violet) or barboard。
3. Day-to-day management: the moisture is kept moist, but water is accumulated and must be discharged in a timely manner。
4. Soil improvement: periodic application of acidic fertilizers (e. G., improved fertilizers in herbs) to prevent eutrophication。
5. Pest control: common diseases include anthrax, foliage, pests such as vermin, coffee moth, which require timely spraying。
• v. Cultural symbols and varieties: phenomenon symbolizes peace and beauty. In addition to the white flowers, the common varieties include the red flowers, the red flowers and the yellow flowers. The conservation of hiroshima through science can become the main urban greening tree of ecological value and aesthetic significance. Where specific pest control programmes or varieties are needed, further access to relevant professional information is available。
