When purchasing a rice transplanter, how to evaluate seeding precision and seedling-taking consistency?
• Seedling-taking consistency: coefficient of variation per hill must be ≤15%.
• With fixed 30 cm row spacing, hill spacing adjustment must cover 12-25 cm.
• Require missing hill rate ≤3% and floating seedling rate ≤5% for field acceptance.
• Check pickup claw material and clearance; worn parts must be individually replaceable.
• Request seeding precision test data across seedling ages of 2-4 leaves.
• With fixed 30 cm row spacing, hill spacing adjustment must cover 12-25 cm.
• Require missing hill rate ≤3% and floating seedling rate ≤5% for field acceptance.
• Check pickup claw material and clearance; worn parts must be individually replaceable.
• Request seeding precision test data across seedling ages of 2-4 leaves.