When purchasing a combine harvester, how to trade off header width against threshing loss rate?
• Each 0.5 m wider header requires matching feed rate, or threshing loss exceeds 1.5%.
• For wheat/rice, 2.5-3.5 m header matches 5-8 kg/s feed rate.
• Set field-verified threshing loss ≤1.2% and broken grain ≤1.0% as acceptance.
• Wide header needs contour-following table; otherwise lodged crop loss doubles.
• Obtain third-party field report stating crop variety, moisture, and travel speed.
• For wheat/rice, 2.5-3.5 m header matches 5-8 kg/s feed rate.
• Set field-verified threshing loss ≤1.2% and broken grain ≤1.0% as acceptance.
• Wide header needs contour-following table; otherwise lodged crop loss doubles.
• Obtain third-party field report stating crop variety, moisture, and travel speed.