PARAMETERS OF OPERATIONAL PERFORMANCE OF SOIL PREPARATION AND SEMI-MECHANIZED TRANSPLANTATION OF COFFEE SEEDLING

ABSTRACT In recent years, the coffee has undergone major changes, and in case of transplanting operation, the use of machinery has proved to be a viable alternative to producers. Prior knowledge of the influence of the variables that influence the operational capability of these machines can generate models to estimate precisely these parameters, thus enabling the optimization and management of mechanized operations. One of this tool is the use of the response surface methodology, which allows checking the influence of different independent variables and the response generated to allow a great value. This study aims to verify the use of the response surface method to determine parameters of mechanized operations in coffee plant implantation. The results show that the number of seedlings deposited increases with the increase in operating speed. In contrast, the adoption of higher speeds decreases the efficiency of the evaluated field operations. The response surface methodology was an important tool to check the effect of variables on performance parameters, and the generated models showed high significance allowing the identification of the effects of the operational speed and the average length of the cultivation line.摘要 近年来，咖啡种植业发生了重大变革。针对咖啡移栽作业而言，机械化作业已被证明是种植者的可行选择。预先掌握影响此类机械作业性能的各类变量的作用规律，可构建模型对相关参数进行精准估算，进而实现机械化作业的优化与管理。响应面法（response surface methodology）便是此类工具之一，其可用于分析不同自变量的影响效应与生成的响应结果，从而获取最优值。本研究旨在验证利用响应面法确定咖啡种植定植机械化作业参数的可行性。研究结果表明，栽植秧苗数量随作业速度提升而增加；与之相反，作业速度过高则会降低受试田间作业的作业效率。响应面法是分析变量对作业性能参数影响的重要工具，所构建的模型显著性较高，可明确识别作业速度与种植行平均长度的影响效应。