Method for preparing landscaping planting soil from engineering residue soil and mud

The invention discloses a method for preparing landscaping planting soil from engineering muck and slurry, relates to the technical field of planting soil manufacturing, improves the ball forming efficiency of a ball forming mill, and comprises the following steps: step 1, dehydrating the slurry; step 2, adding turf ash into the dehydrated slurry, and then feeding the slurry into a ball forming mill for ball forming; 3, the muck is subjected to large-particle grading for standby application; 4, the prepared materials are prepared into a nutrient soil matrix according to a certain proportion; wherein the ball forming machine in the second step comprises a supporting frame, a rotating disc obliquely installed on the supporting frame, a driving assembly controlling the rotating disc to rotate around the axis and a collecting mechanism used for collecting formed balls in the rotating disc. According to the ball collecting device, a worker can collect balls in a non-stop mode. And the ball forming efficiency of th