Farmland water conservancy irrigation system based on big data

The invention discloses a farmland water conservancy irrigation system based on big data. The system comprises a data collection module, an evaporation verifying module, a controller, a signal generation module, an action executing module and a growth prediction module, and the data collection module is used for collecting initial adding concentration and agent condition information of an agent inan agent box and transmitting the same to the evaporation verifying module. Accurate water filling and agent filling values are provided by combining the initial adding concentration and the agent condition of the agent in each time according to double formulized analysis and analogy, in this way, reasonable utilization of the agent and balanced distribution of the agent and water volume are ensured. A prediction model can be built according to illumination condition, water quality condition and agent spraying condition to predict growth condition, and growth difference condition of farmlandblocks can be timely known