Method for trapping pests by stacking grass

The invention discloses a method for trapping pests by stacking grass, belonging to the technical field of agricultural pest extermination. The method mainly sets black light lamps in fields to trap and kill imagoes by learning life habits of the pests, such as crickets, and the like, and utilizing the phototropism of the pests and stacks grass in the fields to trap the pests by utilizing the habits of the pests enjoying roosting on weed stacks. The grass stacking trapping needs to design different diameters and thicknesses of grass stacks according to planting modes of various vegetables and plants and places the grass stacks in the fields according to special density and spaces to attract the pests with the grass stacks so as to achieve the trapping and killing effects. The method more accords with the requirements of vast farmers, has low cost, simple method and easy operation and can also reduce agricultural chemical ingredients of the vegetables, thereby realizing the real pollution-free production of th