PROBLEM TO BE SOLVED: To provide a system for reducing costs and labors required for reserving irrigation water by recovering water in the ground of a required area when it is difficult to reserve irrigation water in the area of desert, arid, etc.SOLUTION: According to the present invention, a humidifier is installed in a water-rich stratum to allow a water-absorbing material to absorb the water in the stratum. Then, air is brown into the water-absorbing material to increase the humidity of the air almost up to saturation humidity. Subsequently, the humidified air is introduced into a condensation device to cause condensation by means of a difference between the inner temperature of the device and the external temperature. The resulting condensation water is distributed to the roots of plants and trees.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】砂漠や乾燥地等で灌漑用水を確保するのに困難な場合、必要箇所の地中に水分の多い地層を利用することで地中にある水分を回収し、灌漑用水確保に要する費用や労力を軽減する装置を提供する。【解決手段】水分を多く含む地層に加湿装置を設置し、地層に含まれる水分を水分吸収材に吸収させこれに空気を吹き込み飽和湿度に近い湿度として上昇させ、これを結露装置に導き装置内温度と外気温度との温度差により結露させて結露水を草木の根に分配する。【選択図】図1