When is Arbor Day?

The most suitable time for planting trees in a year is around Arbor Day. During this time, the temperature is mild, the air humidity is high, and the soil layer contains certain moisture, which can improve the survival rate of trees. Trees can also be planted between September-165438+1October in autumn, or some trees with strong vitality and easy survival can be planted in autumn and germinate in the next spring.

In order to ensure the survival rate of trees, we should pay attention to the steps of planting trees:

First, dig a hole.

Dig a suitable tree pit according to the length and width of the root system. The depth is generally 50 cm. When digging a pit, the ripe soil on the surface and the loess below will fall on both sides of the pit.

Second, backfill.

Before planting trees, some ripe soil should be backfilled in the pit according to the length and width of the roots and the length of the top of the roots. Generally, 20 to 30 cm of ripe soil will be backfilled.

Third, planting.

Remember the word "321"-three buries, two steps and one lift. When planting saplings, it is necessary to straighten the roots and spread the branches, which is the premise. When planting trees, fill the soil in three times. Fill a little for the first time, stop filling at a certain distance from the top of the pit, walk around the tree on the filled soil, step on it evenly, then gently lift the stem and shake it loose to ensure the roots breathe smoothly.

After filling the soil for the second time, walk around the tree again. After the third filling, try to ensure that it is flush with the pit surface. The roots should be aligned with the trees in the north-south, east-west direction. Then, put a large disk around the pit surface to facilitate water conservation in the future.

Fourth, cover the soil to moisturize.

After planting the saplings, cover them with a thin layer of soil to keep moisture.

The role of trees

1, photosynthesis, absorption of carbon dioxide, release of oxygen.

2, transpiration, regulating air humidity.

3. Fix the soil to prevent soil erosion.

4, barrier function, wind and sand prevention.

5. Increase greening and beautify the environment.

6. Appreciate the value of beauty and increase the artistic content.

7. Industrial value, wood products such as wood and woodcarving. ?

8, medicinal value, made into medicinal materials.

9. Trees can reduce noise pollution.