PROBLEM TO BE SOLVED: To provide a simple waterer capable of feeding salt damage-free water to plants on a dry land without requiring power, maintenance, etc.SOLUTION: A part of a tubular body (heat siphon type waterer) in which a hydraulic fluid is encapsulated stays in the atmosphere the remaining part is buried in the ground the temperature of the surface of the tubular body is reduced to a dew point or below in the ground on the basis of the fact that the temperature in the ground is lower at night and thereby, water is fed to plants since water vapor in the ground is condensed.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2016,JPO&INPIT【課題】乾燥地の植物に、動力・維持管理等の手間をかけず、塩害がない水を供給できる簡便な装置を提供する。【解決手段】内部に作動液が封入された管状体(ヒートサイフォン型給水器)の一部を大気中に、残りの部分を地中に埋めることにより、夜間は地中の温度より低いことを利用して地中の管状体表面の温度を露点以下に下げることにより、地中の水蒸気を結露させて植物に水を供給する。【選択図】図2
