| 摘要 |
PURPOSE:To efficiently execute the titled work, by a method wherein tree-planting sheets bonded with planting seeds and fertilizers are fitted inside the down- dale-sided networks set in contact with the rear of pile units and inside the up- hill-sided networks set confronting to the down-dale-sided networks and wherein the space between the tree-planting sheets is filled up with earth or the like. CONSTITUTION:A plurality of pile units 1 are arranged at suitable intervals on the down-dale side of a notched section B. Then, down-dale-sided networks 6 are set in the rear of the pile units 1, and up-hill-sided networks 7 are set at a suitable interval from the down-dale-sided networks 6 and on the hill side. Then, tree-planting sheets 8, 9 of permeable and flexible material bonded with seeds, fertilizers, soil modifiers and the like are fitted respectively inside the down- dale-side networks 6 and the up-hill-sided networks 7 confronting eachother. And the space surrounded with the tree-planting sheets 8, 9 is filled up with earth 10 which is adequately combined with leaf molds, fertilizers, soil modifiers and the like. |
