喷灌最早是本世纪初在美国的加利福尼亚州的山坡地果园应用的,主要是利用喷灌解决果园严重的水土流失问题。初期的喷灌都是铸铁管的固定系统。在第一次世界大战前,喷灌实际上并没有得到推广。到三十年代后,喷灌才在美国南部各州和英、法、德、意等国得到发展。以后由于薄壁管道、旋转喷头和快速接头的推广,才 Sprinkler irrigation is the earliest this century in the United States, California, hillside orchard application, mainly to solve the serious irrigation orchard soil erosion problems. Irrigation are the initial cast iron pipe fixed system. Sprinkler irrigation actually did not get promoted until World War I. By the 1930s, sprinkling was only developed in the states of the southern United States, Britain, France, Germany, Italy and other countries. Later, due to the promotion of thin-walled pipes, rotating nozzles and quick connectors, only