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      2. 稻麥兩用螺旋舀種式排種器排種性能試驗
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        國家重點研發計劃項目(2017YFD0301303);公益性行業(農業)科研專項(201503136)


        Seeding performance of seed metering device with spiral tube scooping for rice and wheat
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          摘要:

          設計了一種稻麥兩用螺旋舀種式排種器,確定了該排種器關鍵部件的結構和參數;運用Design-Expert軟件進行數據分析,得到最優參數組合,采用響應面試驗方案,進行臺架驗證試驗。結果顯示:播種水稻時,在轉速為45 r/min、傾斜角度為3°、出種孔長度為9 mm情況下的合格率為78.20%,重播率為3.71%,空穴率為1%,穴距合格率為97.93%,穴距變異系數為16.17%;播種小麥時,在轉速為60 r/min、傾斜角度為1°、出種孔長度為9 mm,此組合下的合格率為93.37%,重播率為3.44%,空穴率為3.19%,穴距合格率為93.60%,穴距變異系數為25.50%。

          Abstract:

          A seed metering device with spiral tube scooping for rice and wheat was designed to improve the utilization rate of planting equipment in the middle and lower reaches of the Yangtze River and realize the dual-purpose sowing of rice and wheat. The seed metering device uses a spiral seed-scoop tube assembly to take a certain amount of seeds. The structural parameters of the key components of the seed metering device are determined. The Design-Expert software was used to analyze data and obtain the optimal parameter combination. The response surface test plan was adopted to carry out the bench verification test. The theoretical results showed that the qualified rate,the reseeding rate,the no seeding rate,the qualified rate of hole distance and the variation coefficient of hole distance was 81.3%,2.8%,2.5%,94.8% and 17.4% when the rice was sown on the 45 r/min rotational speed,3° inclination angle and 9 mm the length of seeding out hole. The qualified rate,the reseeding rate,the no seeding rate,the qualified rate of hole distance,and the variation coefficient of hole distance was 98.2%,0.2%,1.6%,93.3% and 18.3% when sowing wheat on the 60 r/min rotational speed,1° inclination angle and 9 mm length of seeding out hole. The results of bench test showed that the seeding device can meet the agronomic requirements of rice and wheat sowing under certain conditions.,The qualified rate,the reseeding rate,the no seeding rate,the qualified rate of hole distance,and the variation coefficient of hole distance was 78.2%,3.7%,1.0%,97.9%,and 16.2% when sowing rice on 45 r/min rotational speed,3° inclination angle and 9 mm length of seeding out hole. The qualified rate,the reseeding rate,the no seeding rate,the qualified rate of hole distance and the variation coefficient of hole distance was 93.4%,3.4%,3.2%,93.6%,and 25.5% when sowing wheat on 60 r/min rotational speed,1° inclination angle and 9 mm length of seeding out hole. The test results are basically consistent with the theoretical results obtained from software analyses. It will provide a reference for the designing rice and wheat dual-use planters.

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        梅志雄,夏俊芳,張居敏,杜俊,楊全軍,胡夢杰,駱雙成,劉政源,李支軼.稻麥兩用螺旋舀種式排種器排種性能試驗[J].華中農業大學學報,2020,39(5):136-146

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        • 收稿日期:2019-07-22
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        • 在線發布日期: 2020-10-05
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