Xin Du1,2 and Cailing Liu This email address is being protected from spambots. You need JavaScript enabled to view it.2

1School of Mechanical Engineering, Jiangsu Ocean University, Lianyungang 222005, China
2College of Engineering, China Agricultural University, Beijing 100083, China


Received: April 20, 2022
Accepted: September 15, 2022
Publication Date: October 25, 2022

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

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Root-zone fertilization (RZF) can improve fertilizer utilization, but the development progress of fertilizer point-applied technology is very slow due to lack of fertilizer point-applied device. In this work, a new type of fertilizer point-application device based on the mechanism of Geneva Drive is taken as the specific analysis object, the impacts of working speed, fertilizer discharging height and fertilizer discharging mass on the fertilizer particles distribution performance are explored by DEM-MBD simulation. Box-Behnken test optimization results show that when the working speed, fertilizer discharge height and fertilizer discharging mass of 3.66 km/h, 27 mm and 4.55 g, the fertilizer distribution length and coefficient of variation were 78.62 mm 7.58%, respectively. Based on the simulation results a fertilizer point-applied device was produced and field experiments were carried out at working speeds of 3.6, 4.5 and 5.4 km/h. The results showed fertilizer particle distribution lengths of 14.58 cm, 16.32 cm and 19.35 cm respectively. This paper can provide a mature mechanical device for fertilizer granule point-application agronomy and improve mechanization and operational quality.

Keywords: Fertilizer point-applied device; Root-zone fertilization; DEM-MBD; Particles distribution


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