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2016年曲阜市实施玉米“一防双减”项目,采用大型直升机开展玉米中后期病虫害专业化统防统治.结果表明,“一防双减”技术对玉米中后期病虫害防效显著且增产效果明显,在田间飞防作业实施后10 d、20 d,项目示范区玉米穗虫平均防治效果分别为86.12％、84.68％,玉米叶斑病平均防治效果分别为75.16％、73.67％,与常规区防效相比差异显著;示范区玉米产量平均为8 596.95 kg/hm2,产量增加639.6 kg/hm2,增产率8.04％.“,”In 2016,the “one prevention double reduction” project of maize was implemented in Qufu City.Largescale helicopters were adopted to carry out the specialized control of diseases and insect pests in the middle and late stages of maize.The results showed that control effect of the “one prevention double reduction” technology of Maize to the late pests and diseases was significant.In the field after the implementation of 10 d,20 d of controlling by airplane,average corn earworm control effect in project demonstration area were 86.12％ and 84.68％,the average control effect of corn leaf spot disease were 75.16％ and 73.67％,which was significantly different from conventional controlling practice.Maize yield of demonstration area was 8 596.95 kg/hm2,which increased 639.6 kg/hm2,and the increase rate was 8.04％.