| Summary: | 碩士 === 國立中興大學 === 農業機械工程學系 === 84 === The purpose of this research is to design a seeding mechanism
for onion bulbs, so that the onion cultivating can be mechanized
in the onion farming. Therefore, the cost of production can be
reduced. Consequently, the problem of labor lack can be
resolved. To seed various corps smoothly, the seeding machines
may need different feeding mechanisms. In order to accomplish
nearly precision planting for onion bulbs, this study designed
and implemented curved plates that are used for single feeding.
To simulate seeding condition in different operating speeds, the
study designed one suitable static state test set that used a
variable motor. The results show that the percentage of
successfor seeding of screening bulbs（shorter diameter 11-16mm
）was above 91.3%. When the operating speed was below 2.27km/hr,
the percentage of success in seeding maintained about 93.1%
under test speed among 1.2km/hr and 1.89km/hr. The velocity had
slight effect on it. The seeding intervals were about 10㎝ and
standard deviation was between 0.91㎝ and 0.79㎝.
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