ABSTRACT
The general level of china’s plant protection equipment, for more than a score of years, remained in a relatively low position. Ideal effect can hardly be achieved on nebulization, adhesion and uniformity for spraying, which induces not only the pesticide squander, but the environmental pollution as well. The traditional agricultural sprayer with fixed droplet diameter is unsuitable for the changing working environment according to the factors of density, winds, parts of injury by pest, etc.Then we bring forth a way of variable spraying, which is used to control the dosage and manner of spraying according to the characters of changing working environment, and also is definitely what this paper dealt with-the design of the controller of automatic variable rate spaying.
