Fixed ridge culture and subsurface drip irrigation cultivation method

The invention relates to a fixed ridge culture and subsurface drip irrigation cultivation method. The method includes the steps of pipe laying, ridging and field management. According to the step of field management, in the process of crop watering, water is pumped into subsurface branch pipes through a surface main pipe by using a water pump, and the water seeps into stratum soil through water outlets in the subsurface branch pipes; in the process of crop fertilization, water and fertilizer are pumped into the subsurface branch pipes through the surface main pipe by using the water pump, and the water and fertilizer seep into the stratum soil through the water outlets in the subsurface branch pipes and are directly absorbed and utilized by crop roots; various field operations are achieved by driving an agricultural machine on ridge backs, wherein the wheel base of the agricultural machine is matched with the distance between the subsurface branch pipes, and the field operations include harrowing, sowing betw