Water pressure irrigation system with stable water storage

The invention discloses a water pressure irrigation system with stable water storage, which comprises a water collection tank, an irrigation main pipe and an irrigation branch pipe, wherein the watercollection tank is communicated with a water source through a water inlet pipe; the water inlet pipe is arranged at the top of one side of the water collection tank, and a water inlet battery valve and a ball float valve are arranged on the water inlet pipe; the water collecting tank is communicated with the irrigation main pipe through a water pumping pipe, and an irrigation battery valve, a centrifugal filter, an exhaust valve and a water meter are mounted on the water pumping pipe in sequence; and the irrigation main pipe is communicated with the irrigation branch pipe, and a micro-wettingpipe is connected to the irrigation branch pipe. Irrigation can be realized only by a small water head pressure, so that the irrigation device has extremely high adaptability to harsh environments andavoids a planting mode of