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本研究之目的為針對草花種苗假植作業研製一部自動假植機。假植機之主要功能包括
種苗穴盤輸入、吹出種苗進行自動假植、假植完成輸出花缽與托盤等流程。依此作業流程
分別設計出吹氣頂苗裝置、育苗穴盤定格裝置、夾苗導槽、導苗漏斗等機構來進行假植，
並以可程式控制器進行順序控制。實驗雛形機製成後將機構改良修正並進行初步測試，結
果顯示影響假植成功率的主要因素可分為：機構本身、吹氣方式與種苗性狀等方面，因此
進一步針對吹氣壓力、吹氣方式與介質土含水率等因子進行實驗。就吹氣壓力而言，以孔
雀草與雞冠花種苗進行假植之最佳吹氣壓力為1.5Pa；就PLC控制吹氣方式而言，實驗得到
孔雀草以第一次吹氣0.5秒再短暫補吹兩次為佳。而各不同種苗假植實驗中之最佳假植成
功率以雞冠花為最高可達85%，最差者為夏堇之64%。而自動假植機之作業速度約為每小時
假植3×5花缽45盤。
The objective of this research was to develop an automatic transplanter
suitable for ornamental plant seedlings in nursery trays. The main functionso
f the transplanter include: feeding seedling nursery trays, pneumaticallytrans
planting seedlings into pots, and stepwisely conveying pots with theircontaine
rs. Several mechanisms were designed and integrated to fulfill thesefunctions
, they are: pneumatic nozzles to remove seedlings from the nurserytray, nurser
y tray positioning mechanism, seedling holding gutter and guidechute. A progr
ammable logic controller was implemented for the sequentialcontrol of the tra
nsplanter. Preliminary tests were carried out to improveand redesign the tran
splantermechanisms. Factors affecting the successfulseedling transplantation
were summarized as influenced by mechanisms, bymodes of nozzle blast, and by s
eedling characteristics. Therefore, furtherexperiments were performed to dete
rmine the optimum air pressure, nozzleblast modes and moisture content of seed
ling medium. In air pressure tests,the optimum pressure used to transplant Ta
getes putula L. and Celosia cristataL. was 1.5 Pa. As for nozzleblast modes,
a blast of 0.5 second interval following with two short blasts appeared to be
the best. Among the tests,the best successful transplanting rate was 85% for
Celosia cristata L. while the worst was 64% for Torenia fournieri L.. The tra
nsplanting capacity of the transplanter was 45 trays (675 seedlings) per hour.
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