Structure Optimization and Performance Research of Guided Baffle Shield Sprayer

Guided baffle shield application is effective and economical method to reduce droplets drift. The performance research of this system was carried out with wind tunnel experiment and field trials of herbicide. The results showed that the optimum structure parameters of the guided baffle shield sprayer were: shield width of 40 cm, shield angle of 50 ° , nozzle angle of 50° . 30 days after herbicide application, the weeds control effects was 81. 4% , fresh weight effects was 76. 4% which were superior to conventional application; when the herbicide dosage reduced by 20% , the effect with shield application was same to conventional application. So the guided shield application could save pesticide and reduce cost.