1. A method of watering plants by periodically flooding a tray with plants with a nutrient solution displaced from a working container with a nutrient solution using periodically injected air, characterized in that, to ensure a stable level of periodic flooding in the device, air is injected in a volume exceeding the volume of the displaced solution, when the level of the solution in the device drops below a certain one, an automatic addition of the solution is organized from an additional container with a solution having a neck at the bottom in the form of at least one hole and / or a tube, the additional container is placed with the said neck into the solution of the device. The method according to claim 1, characterized in that water, a solution of mineral and / or organic fertilizers are used as the nutrient solution. The method according to any one of claims 1 and 2, characterized in that the neck is located at a level corresponding to the minimum level of the nutrient solution in the device, while the neck is closed with the nutrient solution until the level of the nutrient solution in the device is above the minimum. A device for watering plants by periodically flooding with a nutrient solution, including a flooded tray, a working container for a nutrient solution, connected to the specified flooded tray by means of supplying a solution for periodically flooding the tray, and associated with means for periodic injection of air, characterized in that for stable flooding level, the device includes an additional container for nutrient solution installed in the bunk1. Способ полива растений путем периодического затопления лотка с растениями питательным раствором, вытесняемым из рабочей емкости с питательным раствором с помощью периодически нагнетаемого воздуха, отличающийся тем, что для обеспечения стабильного уровня периодического затопления в устройстве, нагнетают воздух в объеме, превышающем объем вытесняемого раствора, при понижении уровня раствора в устройст
