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頁籤選單縮合
題名 | 穴盤育苗流體播種機之研究=Study of a Fluid Seeding Machine for Plug-Tray Seedlings |
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作者 | 張金發; 李文汕; 陳世銘; 黃裕益; | 書刊名 | 農林學報 |
卷期 | 57:1/2 2008.06[民97.06] |
頁次 | 頁29-46 |
分類號 | 434.251 |
關鍵詞 | 育苗; 西瓜; 流體播種機; Seedlings; Watermelon; Fluid seeding machine; |
語文 | 中文(Chinese) |
中文摘要 | 本研究目的在於完成流體播種機之研製,配合需浸種與催芽程序之種子育苗播種應用。本機設有特殊種子槽,供存放種子與水,利用吹氣產生浮力,震動種子造成單粒化,以真空吸附原理吸附種子後,再除去真空吸力及排入正壓空氣,達到播種目的。本研究以西瓜種子為對象進行機械性能測試之結果顯示,使用72格穴盤,17號種子吸附針,內吹壓力0.1MPa,水流浮力吹氣壓力0.2MPa,真空吸力25mmHg,其播種缺播率僅為1.97%,複粒率為1.04%.,單粒率達96.99%。經田間試驗調查出土率、生育及幼苗生長量等結果顯示,對可移植之30天苗齡種苗而言,使用流體播種機或人工播種Ⅰ,播種浸種與催芽處理之種子,在莖徑、株高、本葉數、植物體鮮重及乾物重方面,均比使用針式播種機或人工播種Ⅱ等處理,播種未經浸種與催芽過種子之方式為佳,並可提高生長速率,減少育苗日數約3~5天,節省育苗成本。本流體播種機由一人操作,其作業能量每小時可播種94個穴盤,比人工播種每小時33個穴盤快約2.85倍,可取代人工播種並節省勞力工時。 |
英文摘要 | The objective of this study was to develop a fluid drilling machine for seeding operation that required seed soaking and pre-sprouting treatment. The machine was designed with a seed trough where seeds were immersed in water and agitated by compressed air jet. The buoyancy created by the agitation facilitated unitization of seeds and thus individual seeds can be seized by vacuum pressure. To achieve seeding operation, the seeds were then deployed by releasing vacuum pressure and then reversely supplying positive air pressure. Experiments were carried out to test the performance of the developed fluid drilling machine. Using no. 17 suction needles, 0.1 MPa blowing pressure, 0.2 MPa fluid agitation pressure, and 25 mmHg vacuum pressure, the missed seeding rate, multiple seeding rate were 1.97% and 1.04%, respectively. 96.99% of seeds were successfully seeded. Field tests also revealed that seeding by fluid drilling machine was superior to manual seeding or seeding without soaking and pre-sprouting treatment judging from seed emergence rate and seedling characteristics of stem diameter, plant height, leaf number, plant fresh weight and dry weight for 30-day watermelon seedlings. By applying the fluid drilling seeding operation, nursery period of seedlings can be 3~5 days less and therefore production cost can be reduced. The fluid drilling machine was operated by single person, and the seeding capacity was 94 trays per hour, which was 2.85 times faster than that of 33 trays per hour by manual seeding. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。