Upper tobacco comprehensive disease prevention and pest control method

The invention discloses an upper tobacco comprehensive disease prevention and pest control method and belongs to the flue-cured tobacco protection technology field. The method comprises the followingsteps of S1, seed selection and field selection; S2, preliminary management; S3, early-stage transplanting; S4, early stage prevention and treatment; S5, middle stage prevention and treatment; and S6,middle and later stage supplementary treatment. The protection range of upper tobacco pest and disease damages is wide, which is from the seed selection to the later stage of planting, effective protection measures against pests and diseases are implemented at each stage, and systematic comprehensive pest control is performed on tobacco plants. A simple and single pest and disease resistance modein a traditional technology is broken through, the pest and disease damages of the tobacco plants are effectively restrained, the impacts of pests and diseases on the tobacco plants are obviously reduced, and the quality and t