据美刊《灌溉年代》介绍,现在有一种简单、有效的方法,用来平衡喷灌系统上各个喷头的喷灌强度,这种系统可使灌溉土地上各部分获得更均匀的供水,这就是Nelson流量控制器。这 According to the American edition Irrigation Times, there is now a simple and effective way to balance the sprinkling intensity of individual sprinklers on sprinkler systems that provide a more uniform supply of water to all parts of the irrigated land - the Nelson flow rate Controller. This