为了实现智能化、精准化施肥，设计研究了一种基于物联网的配方施肥系统。该系统包括变频控制设备、首部控制设备、控制流量的远传恒流阀、离心泵、原液罐、混肥罐等。系统采用物联网管控手段控制原液罐进肥通道的进肥流量与混肥罐出肥通道的出肥流量的比例及混肥罐中液位的恒定，使配方肥料按照设定的稀释倍数稀释后输送到作物根系部分。系统可保存每次的施肥记录，包括种植作物面积、数量、施肥量、稀释倍数等，也可与远程控制平台对接实现远程控制功能，从而使田间施肥变得智能、高效、可控和经济。

In order to realize intelligent and precise fertilization， a formula fertilization system based on the Internet of Things is designed and studied. The system includes variable frequency control equipment， first control equipment， remote constant flow valve to control flow， centrifugal pump， raw liquid tank， fertilizer tank， etc. The system adopts the Internet of Things control method to control the ratio of the fertilizer flow rate of the feed channel of the raw liquid tank to the fertilizer flow rate of the fertilizer channel of the fertilizer tank and the constant liquid level in the fertilizer tank， so that the formulated fertilizer can be diluted according to the set dilution factor. The system can save each fertilization record， including the crop area， quantity， fertilization amount， dilution ratio， etc.， and can also be connected with a remote control platform to realize remote control functions， so that field fertilization becomes intelligent， efficient， controllable and economical.