Design and Experiment of a Fertilizer Deep Applicator for Twin-row within One Ridge

摘要

This paper presents a new design for a fertilizer deep applicator that is suitable for twin-row application within one ridge row as is commonly used in flatland regions of Guizhou, China for tobacco production. The applicator is capable of finishing tilling, ridging and precise fertilization at the same time. The fertilizer applicator implement is coupled with a control system that regulates fertilizer application based on operation speed. The implement was tested in a series of field experiments. Results show that the implement is capable of tilling, ridging and fertilizer application at the same time, can apply fertilizer deep and precisely with the variable coefficient of fertilization uniformity of 12.3% and the operation efficiency of 0.41 hm~2/h with deviation of fertilizer amount under 4.58%, and can make well-shaped ridges with the ridge height, top width and base width of 28 mm, 1,318 mm and 1,755 mm, respectively, which are within the acceptable range of the target values of 30 mm, 1,300 mm and 1,700 mm, respectively.