膜下滴灌水稻穴直播机研究
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国家高技术研究发展计划(863计划)项目(2011AA100508)


Design of Rice Planter with Plastic Film Mulched Drip Irrigation
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    摘要:

    根据水稻膜下滴灌穴直播的农艺要求,分别设计了不同种植模式下适用的膜下滴灌水稻播种机,并对关键部件滚筒式穴播器和覆土装置进行分析;通过正交试验确定了影响其播种性能的因素依次为成穴鸭嘴长度、滚筒式穴播器的滚筒直径和行走速度,影响其覆土性能的因素依次为导土板螺旋升角、覆土滚筒直径和行走速度。在较优参数组合鸭嘴长度28mm、穴播滚筒半径180mm、覆土滚筒螺旋升角35°、覆土滚筒直径360mm、播种机行走速度0.65m/s时,膜下滴灌水稻播种机播种深度合格率为92.6%,穴粒合格率为94.7%,覆土合格率为91.2%,空穴率为1.8%,平均产量达10500kg/hm2,该播种机能满足膜下滴灌水稻播种的技术要求。

    Abstract:

    The rice planting area in China accounts for 21% of world’s planting area, but there is only 6% of water resource of the world. Water consumption of traditional rice planting was about 12000m3/hm2 〖JP〗in the whole growing period, which made a difficulty in planting rice at large scale in cold and arid region of China. In order to enlarge rice planting area and improve the level of mechanization in aerobic soil with plastic film mulching, planters were designed in different planting patterns to meet the agronomic requirements for rice cultivation with plastic film mulched drip irrigation. The parameters of key components (drumtype dibbler and covering device) were determined by dynamics and kinematics analyses. Besides, the factors that affected sowing performance were confirmed as sowing roller’s radius (R), length of duckbilled soil opener of drumtype dibbler (H) and walking speed (v), factors that affected mulching performance were diameter of mulching roller (D), lift helix angle (β) and walking speed (v) of planter. According to orthogonal test, the three factors and four levels orthogonal optimal experiments were carried out, which indicated the importance of the three factors for sowing performance were in the order as H>R>v. Meanwhile, for the mulching performance, the importance of the three factors were in the order as β>D>v. When the length of duckbilled soil opener was 28mm, radius of sowing roller was 180mm, lift helix angle was 35°, diameter of mulching roller was 360mm, and walking speed was 0.65m/s, the qualified rate of sowing depth was 92.6%, qualified rate of sowing number per hole was 94.7%, qualified rate of mulching was 91.2% and vacancy rate was 1.8%. The rice yield was 10500kg/hm2, the average spike number per hectare was 3.25 million. The performance of this planter could meet the technical requirement for rice sowing with plastic film mulched drip irrigation.

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牛琪,王士国,陈学庚.膜下滴灌水稻穴直播机研究[J].农业机械学报,2016,47(s1):90-95.

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  • 收稿日期:2016-07-20
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  • 在线发布日期: 2016-10-15
  • 出版日期: 2016-10-15