Development and experiment of precise variable rate fertilizer applicator for tobacco
In order to improve the performance of precision variable fertilizer applicator and improve the control accuracy of variable fertilizer application,a spiral groove wheel fertilizer applicator was designed,the influence of different structure of fertilizer applicator on the stability of fertilizer application was studied,the experiment on the fertilizer amount of spiral drainer with different groove radius of 45° and groove wheel speed of 25 r/min showed that the coefficient of variation was small and tended to be stable when the groove radius exceeded 10 mm,and the fertilizer discharge uniformity was good and the reliability of spiral groove wheel was verified by bench test.The results showed that the variation coefficient of fertilizer amount decreased significantly after optimization,the standard deviation decreased by 15.13%and the coefficient of variation decreased by 12.74%.The results showed that the improved seed dispenser could improve the stability of fertilizer dispenser and meet the requirements of precise variable fertilization of tobacco.
stability of fertilizationvariable rate fertilizationspiral grooved wheel
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