Development of Key Technology and Equipment of Intelligent Water and Fertilizer Machine Control System

In view of current situation that fertilizer application accuracy of water and fertilizer integration equipment was not high and intelligent degree was low，based on the technology of PLC and LORA narrowband internet of things，a set of high-precision intelligent water and fertilizer integration equipment with internet of things function suitable for facility agriculture was improved.It could realize automatic control of water and fertilizer at fixed time and quantity，improve crop quality and benefit of facility agriculture.