温室灌溉系统的水力性能是灌溉生产和配套的重要依据。针对3种常用的叠片过滤器(1.5、1.2、1.0 inch)设计了5种典型的首部组合,并测试其水力性能,为首部选型提供基础数据。通过试验,得到如下结论:(1)内部结构简单、尺寸较大的叠片过滤器,水力性能较好;(2)5种组合中,组合1的水头损失最小,且各分部水头损失比例最为均匀、稳定;(3)首部水头损失主要来自于水表、过滤器及其他部件等部位,首部水头损失较大,一般应控制首部水头损失在10 m以下。 The hydraulic performance of greenhouse irrigation system is an important basis for irrigation production and supporting. Five typical head combinations for the three commonly used lamination filters (1.5, 1.2, 1.0 inch) were designed and tested for hydraulic performance to provide basic data for the first selection. Through the experiment, the following conclusions can be drawn: (1) Laminated filter with simple internal structure and large size has better hydraulic performance; (2) Among the 5 combinations, the head loss of combination 1 is the smallest, and the head loss ratio (3) The head loss is mainly caused by water meters, filters and other components. The loss of the first head is larger. Generally, the head loss should be controlled below 10 m.