"Shubao" is also called plant Baoqing jar (China Patent No.: 2016210512180). SB~2 tree maintenance is a device for watering plants to keep   green. It can be used for growing fruit trees in greenhouse, cultivating fruits and vegetables, increasing fruit yield, landscaping and rescuing   trees.

The principle is: burying the "Shubao" in the root of the plant, watering, volatilizing naturally to the soil in the drought period, maintaining the   soil moisture, and the water storage container can be volatilized for 2~5 months after being filled with water. It was successfully developed on   July 20, 2017, and has successively carried out experiments in arid areas, urban gardens, watermelon cultivation, tree rescue and other fields,   and achieved obvious results. It provides technical means for improving the ecological environment, reducing groundwater exploitation,   reducing water conservancy investment, reducing fertilizer use, increasing agricultural income and targeted poverty alleviation. It is a revolutionary invention with low cost and simple installation. It has international leading level. The exhibition in Africa has aroused the attention of   Agricultural Organization officials of the United nations. The paper was included in the World Conference on desertification control The   collection won the highest award of "Houji special award" in the 24th China Yangling agricultural high tech achievements Expo, and its products were exported to Canada, Australia, Africa and other places.