Abstract

In order to solve the problem that traditional millet drilling method needs labor-intensive artificial thinning-out, a hole-seeding method is proposed to replace it. Under hole-seeding conditions, an air-suction millet seed-metering device was designed. The design of air-cutting valve can assure that suction-holes are not clogged and reliably falling seeds. Suction-hole structure of the seed-metering device takes chamfer type. The dimension parameter of the chamfer hole is as follows: diameter of 4 mm, chamfer depth of 2.5 mm, fissuriform bottom of suction-hole is 1 mm width, number of holes is 32. The passing rate of hill spacing, repeat-sowing rate, leak-sowing rate and hill formation were analyzed by seed-metering test platform, which meets the precision of millet seed and agronomic requirements.

Keywords:

Air-suction, bench test, hole-seeding, millet, seed-metering device,

References

1. Barut, Z.B. and A. Ozmerzi, 2004. Effect of different operating parameters on seed holding in the single seed metering unit of a air-suction planter. Turk. J. Agric. For., 28(6): 435-441.
   
2. Bian, Y., Y. Ma and Z. Zhang, 2007. Reciprocating feeder applied to precision seed-grain sowing machines. T. Chinese Soc. Agric. Eng., 23(2): 122-127.
   
3. Chen, F., J. Zhang and F. Chen, 2011. Design and research on suction slot-type precision wheat seeder. J. Agr. Mech. Res., 33(8): 81-84.
   
4. Cui, Q., G. Qin and M. Wang, 2003. The analysis and comparison on several kinds of precision feed mechanism. J. Shanxi Agric. Univ., 23(1): 69-71.
   
5. Liao, Q., B. Yang, X. Li, Y. Liao and N. Zhang, 2012. Simulation and experiment of inside-filling air-blow precision metering device for rapeseed. T. Chinese Soc. Agric. Mach., 43(4): 51-54.
   
6. Liu, W.Z., M. Zhao and W.M. Wang, 2008. Analysis on the sowing performance of air-suction seed-metering device. J. Agr. Mech. Res., 30(5): 45-47.
   
7. Liu, Y., 2011. Airflow field finite element analysis of air-suction seed metering device of no-tillage planter. M.A. Thesis, Inner Mongolia Agricultural University, Hohhot.
   
8. Sun, Q., 2003. Study and test analysis of one-step seed-centralized pneumatic drill. M.A. Thesis, Shandong Agricultural University, Taian, China.
   
9. Tian, C., Z.L. Liu and L. Chen, 2013. Millet precision seeder research and development. J. Agr. Mech. Res., 35(1): 10-13.
   
10. Xu, J.P., Y.F. Xie and B.C. Chen, 2008. The present technic status and developing tendency of abroad pneumatic precision drill. J. Agr. Mech. Res., 30(12): 203-206.
    
11. Yang, H. and D. Zhao, 2007. Research present situation and tendency about performance examination way of millet precision seeder. J. Agr. Mech. Res., 29(2): 34-35.
    
12. Zhao, X.S., H.L. Yu, J.G. Zhang, X.J. Huo, F.Y. Chen and J. Zhao, 2013. Slot-type pneumatic precise wheat seed-metering device. T. Chinese Soc. Agric. Mach., 44(3): 48-51, 74.
    
13. Zhao, Z., Y.M. Li, J. Chen and H. Zhou, 2011. Dynamic analysis on seeds pick-up process for vacuum-cylinder seeder. T. Chinese Soc. Agric. Eng., 27(7): 112-116.
    
14. Zheng, S.J., 2007. The research of seeds equipment for precision seeding-machine automatic monitor system. M.A. Thesis, Northwest Agriculture and Forestry University, Yangling, China.
    

Competing interests

The authors have no competing interests.

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