PROBLEM TO BE SOLVED: To provide a system which does not cause root rot in a mixed compost, has a structure preventing from root rot, and copes with dryness by watering from above in the same way as in the case of planting in the ground, in order to enable a cultivation for a large variety of plants in which the trouble of watering is saved for a long period of time by improving a watering string type bottom watering cultivation.SOLUTION: A string for watering is winded to make a cylindrical shape with a diameter of 1.5 cm using a micro cloth having a width of 20 cm, a length of 13 cm, and a thickness of 1 mm, a head part made from the same material is put to form in a paper doll for fine weather, water is sucked up, and thereby the PF of the bottom of a compost becomes about 1.0. When water is sucked up by 10 cm, the PF becomes about 1.4. Furthermore, the water in the bottom part is sucked up with a capillary through inside a compost, the PF in the compost at about 6 to 12 cm from the bottom becomes 1.0 to 1.7. There is no desiccation in this position. Since, in the upper compost at 12 to 18 cm, the water is reduced by dryness and a plant may wither, watering by manual operation is required.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】給水紐式底潅水栽培を改良して長期的に水遣りの手間を省く多品種植物栽培を可能とするため、混合培養土において根腐れがなく、根腐れを防ぐ構造を持ち、乾燥に対しては地植えと同じように頭上潅水で対応するシステムを提供する。【解決手段】給水紐の形状を幅20cm、長さ13cm、厚さ1mmのマイクロクロスの布を円柱状として巻いて直径1,5cmとし、同材料の頭部を付けて、てるてる坊主に形成し、水を吸い上げることで培養土底部はPF1,0程度になり、10cm吸い上げではPF1,4程度になる。更に底部の水は培養土内を毛細管で吸い上がり底から6cm-12cm程度の培養内ではPF1,0-PF1,7になる。この位置では、乾燥はない。この上の12cm-18cmの培養土においては乾燥によって水分が減り、萎れることがあるので手動による潅水が必要である。【選択図】図1
