Parameter optimization of the spiral fertiliser discharger for mango orchards based on the discrete element method...

Area of Science:

• Agricultural Engineering
• Precision Agriculture
• Soil Science

Background:

• Mango orchard fertilization faces challenges with accuracy, stability, and low utilization rates.
• Existing methods often lead to inefficient nutrient delivery and environmental concerns.

Purpose of the Study:

• To design and optimize a small spiral fertilizer discharger for mango orchards.
• To enhance fertilization accuracy, stability, and nutrient utilization in mango cultivation.

Main Methods:

• Developed a spiral fertilizer discharger prototype based on mango orchard agronomic needs.
• Utilized theoretical analysis, bench tests, and discrete element method (DEM) simulations.
• Employed Response Surface Method (RSM) and Genetic Algorithm (GA) for parameter optimization.

Main Results:

• Identified spiral blade diameter, pitch, and rotational speed as significant factors affecting stability.
• Determined optimal parameters: 98.44 mm blade diameter, 54.8 mm pitch, 24.43 r/min speed.
• Achieved high accuracy and stability in fertilizer discharge, meeting agronomic standards.

Conclusions:

• The developed spiral fertilizer discharger effectively addresses fertilization challenges in mango orchards.
• The study validates the reliability of DEM simulation and optimization methods for agricultural machinery.
• Findings provide a reference for developing advanced mango orchard fertilization machinery.