【正文】 發(fā)展很快，到 2021 年水稻總體水平約為 %左右，總體趨勢是南方比北方低，農村比農墾低，黑龍江墾區(qū)水稻綜合機械化水平達 84%。 3)減少損失、增產增收 聯合機械化收獲總損失率低于 5%，比人工收獲減少損失 8%左右；機插秧比人工栽插平均增產達 ％，提高單產 375 公斤 /公頃以上；低溫干燥可減少霉爛損失 4%以上。加快發(fā)展水稻生產的機械化，減輕水稻生產的勞動強度，降低生產成本，增加產量和收益，是提高水稻綜合生產能 力，保障我國糧食安全的一項戰(zhàn)略措施，對推動現代農業(yè)和社會主義新農村建設具有重要意義。 the seed metering device using scoop metering device will be aired a seed from the seed box, seed falls on the sieving plate, vibration sieving, removing impurities into the installed on one of the Vshaped trough plate, seed flow along the V shaped groove plate orderly queue, the export broadcast. The seeding process of mechanized seedling seedling, can realize the assembly line, rice seedling factory. Key Words： Rice seedlingnursery； Assembly line； Spoon； Vibration type Abstract i 目 錄 摘要 ................................................................................................................................. I Abstract ........................................................................................................................... II 1 緒論 ......................................................................................................................... 1 課題背景 ........................................................................................................... 1 水稻生產情況及意義 ................................................................................... 1 水稻的主要種植模式及分布區(qū)域 ................................................................ 2 水稻種植技術的多樣性 ............................................................................... 3 超級稻機械化播種的難度 ........................................................................... 3 水稻秧盤育秧播種流水線的關鍵技術現狀 ........................................................ 4 秧盤育秧精密播種裝置 ............................................................................... 4 秧盤 ............................................................................................................ 8 水稻秧盤育秧播種流水線的發(fā)展趨勢 ............................................................... 9 研究目標與研究內容 ......................................................................................... 9 研究目標 ..................................................................................................... 9 主要研究內容 ............................................................................................. 9 2 水稻秧盤育秧精密播種機總體配置 ....................................................................... 10 總體結構 ......................................................................................................... 10 振動式精密播種裝置結構及工作原理 ............................................................. 10 3 氣動振盤基本理論及振動器選取 ........................................................................... 12 氣動振盤排種的基本理論 ................................................................................ 12 水稻種子輸送的基礎理論分析 ........................................................................ 12 振動器的選擇 .................................................................................................. 12 電磁振動器 ............................................................................................... 12 氣動振動器 ............................................................................................... 13 氣動振動體的運動理論 ............................................................................. 14 4 振動式精密播種裝置 結構設計 ............................................................................... 16 水稻芽種的物料特性 ....................................................................................... 16 定量供種器結構設計 ....................................................................................... 16 氣動振盤結構設計 ........................................................................................... 18 5 振動式精密播種裝置三維設計 ............................................................................... 20 定量供種器結構三維設計 ................................................................................ 20 橡膠彈性板的三維設計圖 ......................................................................... 20 勺式外槽輪的三維設計圖 ......................................................................... 20 定量供種器結構三維設計圖 ...................................................................... 21 氣動振盤結構三維設計 ................................................................................... 21 V 形播種盤三維設計圖 .............................................................................. 21 Abstract ii 氣動振盤結構三維設計 ............................................................................. 22 振動式精密播種裝置三維設計圖 ..................................................................... 22 6 結論 ........................................................................................................................ 24 參考文獻 ................................................................................................................... 25 致謝 .......................................................................................................................... 27 緒論 1 1 緒 論 課題背景 水稻生產情況及意義 水稻一直以來被視為重要的糧食作物，在糧 食安全中占據極其重要的地位。 through the key technology research and application of design suitable for Tray Nursing Seedlings of rice precision seeding of the vibrating tray nursing seedlings of rice precision seeding device. The main results are as follows:Firstly, this paper introduces the position and working principle of the rice seedling factory seeding assembly, and to determine the vibration row the overall structure。采用振動原理，研制了一種振動式精密播種裝置，用于水稻工廠化育秧，實現播種的精確控制；通過關鍵技術的研究與應用，設計了一種適應于水稻秧盤育秧精密播種的振動式水稻秧盤育秧精密排