| 摘要 |
PURPOSE: A p.p(plastic pallet) treatment method for relieving tree from trampling pressure using a perforated drain pipe, a plastic pallet or the like is provided. Therefore, it effectively prevents damage to roots of a tree caused by artificial trampling pressure and improves the growth of the tree. CONSTITUTION: Soil is excavated into a depth of about 30cm, a perforated drain pipe having a diameter of 70 to 120mm and a height of 300 to 600mm is uprightly arranged at a distance of 1m, the perforated drain pipes are connected with a plastic rod having a diameter of 70 to 100mm. Organic material such as compost powder, and leaf mold, is sprinkled on the soil into a thickness of 5 to 10cm, covered with a perforated p.p(plastic pallet) and fixed with an iron nail having a diameter of 10mm and a length of 250 to 350mm. Then, the perforated plastic pallet is covered with gravel having a size of 20 to 30mm into a thickness of 70 to 100mm. |
