Rotary irrigation and spraying intelligent device and land irrigation method based on same

The invention discloses a rotary irrigation and spraying intelligent device and a land irrigation method based on the rotary irrigation and spraying intelligent device. A support assembly comprises a base and a stand column rotationally installed on the base. The spraying pipe set is provided with a first water supply pipe and a second water supply pipe, the first water supply pipe extends outwards in the radial direction of the stand column, first spraying heads distributed in the length direction of the first water supply pipe are installed on the first water supply pipe, the first spraying heads are provided with spraying liquid through the first water supply pipe, and a second spraying head is obliquely fixed to the far end of the first water supply pipe. The second water supply pipe provides spraying liquid for the second spraying head, the second spraying head is used for spraying liquid in the inclined direction, and the liquid spraying pressure of the second spraying head can be gradually increased or