High-precision flow control hydraulic system of no-tillage planter

The utility model discloses a high-precision flow control hydraulic system of a no-tillage planter. The high-precision flow control valve comprises a valve element rotating sleeve, a valve element rotating sleeve ejector rod and a speed reducer. A hollow shaft output hole of the speed reducer is matched with a valve element rotating sleeve through a flat key, the valve element rotating sleeve is connected with one end of a valve element through threads, the other end of the valve element is arranged in a guide sleeve, and a crescent oil passing groove is formed in the valve element in the circumferential direction. An oil inlet and an oil outlet are formed in the valve body, the oil inlet and the oil outlet are communicated through the crescent oil passing groove, the oil passing groove corresponds to a sealing piece in the valve body in position, the oil inlet of the oil passing groove is formed in one side of the sealing piece, the oil outlet of the oil passing groove is formed in the other side of the seal