SHBAO is buried in the soil of plant root, funnel is laid on the ground, plastic is laid between funnel and filter, plastic cloth is laid into funnel shape with certain slope to collect rainwater, rainwater is collected with plastic cloth and flowed into water storage container, float driving indicator rod indicates water level of water storage container, water in water storage container evaporates naturally through evaporation cover. In soil, to maintain soil moisture and plant survival. The water storage container can be stored for 2-5 months after being filled with water.

     The invention has low use cost and simple installation, and provides a new technical means for planting a large number of economic trees such as fruit trees, poplars and pine trees in arid areas, and is an ideal product for improving agricultural income, improving the atmospheric environment, and precision poverty alleviation.