本文提出一种不依赖引水干线的水压可自动保持恒定耗水量的滴灌装置。该装置由壳体3(见图)、盖11、阀6和弹簧5组成。阀杆上有横向环形沟8,沟槽互不相通,在阀杆平头6上有深刻痕10。水在压力下进入孔2并将弹簧5压缩,把阀杆压入滴水口4中,直到水的压力与阀杆 This paper presents a drip irrigation device that can automatically maintain a constant water consumption without relying on the water mainline. The device consists of a housing 3 (see picture), a cover 11, a valve 6 and a spring 5. The valve stem has a transverse annular groove 8, the grooves are not connected to each other, there are deep marks 10 on the valve stem flat head 6. Water under pressure into the hole 2 and the compression spring 5, the valve stem into the drip mouth 4 until the pressure of water and the valve stem