机具的准备1.根据防治对象和喷雾作业的要求,正确选择喷雾机(器)的类型、喷头的种类和喷雾机的尺寸。在大田防治病虫害时,选择液力式喷雾机、圆锥喷雾头;除草时应选用喷杆式喷雾机、扇形喷雾头;果树、人行道树应用喷枪、高压、液力喷雾机或风送式喷雾机。2.作业前检查机具,机具 Equipment Preparation 1. According to the control object and spray job requirements, the correct choice of spray machine (type), the type of nozzle and spray machine size. In the prevention and control of pests and diseases in the field, the choice of hydraulic sprayer, cone spray head; weeding should be selected spray bar sprayers, fan-shaped spray head; fruit trees, sidewalks tree spray gun, high pressure, hydraulic sprayer or air-fed sprayer . 2 pre-operation inspection equipment, equipment