Water and fertilizer integrated device for saline-alkali soil

The water and fertilizer integrated device comprises an irrigation vehicle, a spray head is installed at the upper end of the irrigation vehicle, and the upper end of the irrigation vehicle is fixedly connected with a stirring barrel through a supporting column; the mixing mechanism comprises a rotating shaft rotationally connected to the top in the stirring barrel, the lower end of the rotating shaft penetrates through the lower end of the stirring barrel, a vertical groove is formed in the lower end of the rotating shaft, a magnetic sliding plug is slidably connected to the inner wall of the vertical groove in a sealed mode, a mounting rod is fixedly connected to the upper end of the magnetic sliding plug, and a plurality of frame openings are formed in the side wall of the rotating shaft. The inner walls of the frame openings are fixedly connected with pin shafts. The motor is started to drive the rotating shaft to rotate so as to drive the plurality of stirring rods to rotate and also drive the plurality