Design and Experiment on Seed Metering Mechanism of 2MBYJ-2 Type Maize Precision Seeding Machine on Film

In order to improve operation performance of maize seeding machine，aiming at the problem that existing maize seeding machine laid film，but couldn’t seed accurately，new maize precision seeding mechanism on film was designed.Main structural parameters of guiding seed mechanism and throwing seed mechanism were determined.Performance experiments of guiding seed operation were carried out with no guiding board device and guiding board device in guiding seed mechanism.Results showed that in order to ensure the success rate of guiding seed exceed 90%，forward speed of seeding machine need less than 3.4 kmh with no guiding board device.Performance tests results with guiding board device showed that success rate of guiding seed could exceed 95% when forward speed of seeding machine achieved 6.8 kmh.The results provided important technical reference for the development of maize precision seeding machine on film.