Grass seed pelleting process

The invention provides a grass seed pelleting process. The grass seed pelleting process comprises the following steps: (1) mixing matrix components, and extruding to form a columnar particle matrix by using a pelleting extruder, wherein the diameter of the columnar particle matrix is smaller than 4mm, and the length of the columnar particle matrix is 5-15mm; (2) mixing grass seeds with the columnar particle matrix according to the proportion of (1-2) to (100-150); (3) extruding the grass seeds and the columnar particle matrix by using a double-roll extrusion pelleter for pelleting under the extrusion strength of 8Pa to form flat-spherical vegetation particles of which the diameter is 4-10mm. According to the grass seed pelleting process, the technical problems that the shape of gramineous grass seeds is irregular and the gramineous grass seeds are easily damaged in the preparation process are solved, the drift of the seeds can be effectively reduced, the landing stability of the seeds is improved, and the see