In China, Pu Shu is distributed in Huaihe River Basin, the provinces from south to south of Qinling Mountains, the middle and lower reaches of the Yangtze River, southern provinces (regions) and Taiwan Province Province. It is also distributed in Vietnam and Laos. Most of them grow on roadsides, hillsides and forest margins at an altitude of 100- 1500m.
Pu Shu can be used as a street tree, which has strong resistance to toxic gases such as sulfur dioxide and chlorine. Stem bark is the raw material of papermaking and artificial cotton; Fruit oil is used as lubricating oil; Wood is hard and can be used in industry.
Roots, bark and leaves are used as medicine to relieve swelling and pain, detoxify and treat heat, and externally apply water, fire and scald: pesticides made from leaves can kill red spiders. Planting in Pu Shu is usually based on sowing and reproduction. Pu Shu seeds generally mature in September. After harvesting, the seeds should be scrubbed and stored in the shade.
In March-April of the following year, separate beds were planted. Before sowing, pour water on the soles of your feet, then wash the previous seeds and bury them in the soil. The sowing depth should not be too deep, and 1.5-2 cm is appropriate.
When raising seedlings, it is necessary to cover the soil surface with plastic film to keep the soil at an appropriate temperature and humidity. Generally, seedlings can be cultivated in about 65,438+00 days. After the emergence of seedlings in Pu Shu, it is necessary to uncover the plastic film, pull out seedlings, weed and fertilize.
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During the cultivation of Pu Shu, attention should be paid to the shaping and pruning of Pu Shu saplings to make their trunks straight and their crowns even. When transplanting big seedlings, bring soil to prevent them from dying due to lack of water. In the process of cultivation, we should pay attention to the main pests such as cotton aphid and psyllid, and do a good job in pest control.
After planting in Pu Shu, it is generally necessary to cover it with plastic film to maintain proper temperature and humidity. Spray water on Pu Shu once every morning and evening. Generally, Pu Shu can germinate in about a month. When the new shoots grow to 10 cm, it is necessary to dig a small hole above the plastic film to leak the seedlings of Pinus tabulaeformis and keep the plastic film ventilated.
When the new shoot length is 15 cm, the plastic film can be peeled off to increase the water spray. Pu Shu likes light, shade and cold, so it should be placed in a well-ventilated and sunny place. When it is hot in summer, it should be properly shaded, and it can be placed in a sunny and leeward place in winter. In addition, fertilization should be done well during the growth of Pu Shu.