A hydraulic design method for the pipe diameter of a micro-irrigation capillary pipe based on a flow deviation coefficient

The invention discloses a hydraulic design method for a micro-irrigation capillary tube diameter based on a flow deviation coefficient. The method comprises the following steps of 1, constructing capillary tube diameter design parameters based on the flow deviation coefficient according to a capillary tube slope ratio and a flow index; Step 2, determining a calculation formula of the micro-irrigation capillary pipe diameter according to the pipe network arrangement form, and calculating the capillary pipe diameter based on the capillary pipe diameter design parameter obtained in the step 1 based on the flow deviation coefficient; and step 3, judging to obtain the number of designed pipe diameters meeting the flow deviation coefficient according to the relationship between the correspondingslope ratio under the flow index and the capillary pipe diameter design parameters based on the flow deviation coefficient. The design efficiency of the micro-irrigation capillary tube diameter can be improved; By considerin