选用大型自走式高杆喷雾机采用茎叶喷雾的方法,测定了几种药剂对玉米中后期病虫害的防治效果。结果显示:在大喇叭口期喷施苯甲·嘧菌酯、高氯·甲维盐、芸苔素内酯混合药液对玉米螟的防治效果为86.24%,对玉米褐斑病的防效为82.10%,具有一定增产效果;在籽粒形成初期喷施苯甲环·嘧菌酯、吡虫啉、优吉锌肥混合药液,对蚜虫的防效达90.59%,玉米小斑病的防效为85.21%,增产效果明显,达11.03%;3WX-280G自走式高秆作物喷杆喷雾机可在地势平坦的地块开展玉米中后期喷雾作业;在玉米籽粒形成初期喷施药液的增产效果优于在大喇叭口期喷施药液。 Selection of large-scale self-propelled pole spray machine stems and leaves spray method to determine the effect of several agents on pest control in the late corn. The results showed that the control effect of azoxystrobin, high chlorine, carbaryl and brassinolide on the corn borer was 86.24% at the big bellmouth stage, and the control effect on maize leaf spot Was 82.10%, with a certain yield-increasing effect. In the early stage of grain formation, spraying azadirachtin, imidacloprid and nicotinic acid was 90.59% 85.21%, yield increase effect is obvious, up to 11.03%; 3WX-280G self-propelled high-stalk boom spray sprayer can carry out mid-late corn spray operation in the flat land; Better than spraying the liquid in the big bell mouth.