滴灌施肥是将施肥与灌溉结合起来的农业新技术,它能有效地克服大水冲肥的各种弊病,显著地提高保护地栽培的经济效益。 1.设备组成与安装滴灌施肥系统由水源、首部、输水管道和滴灌器四部分组成。水源一般设在大棚东或西一侧山墙附近,或在拱棚内,根据地下水的深浅配置离心泵或潜水泵。首部包括调压阀、施肥罐(或文丘里施肥 Drip fertigation is a new agricultural technology that combines fertilization with irrigation. It can effectively overcome various shortcomings of flood and fertilizer, and significantly increase the economic benefits of cultivation in protected areas. 1. Equipment composition and installation Drip irrigation system consists of water, the first, water pipes and drip irrigation device composed of four parts. Water is generally located in the greenhouse east or west side of the gable, or in the shed, according to the depth of groundwater configuration centrifugal pump or submersible pump. The first includes the regulator, fertilizer tank (or Venturi fertilization