Seeding performance of air-assisted centralized seed-metering device for rapeseed
Keywords:
rapeseed, air-assisted centralized metering device, seed hill feeding, seeding performanceAbstract
In order to analyze seed movement characteristics and improve seeding quality of air-assisted centralized metering device for rapeseed, the effects of the model-hole structure on seed feeding performance were investigated using EDEM simulation. Furthermore, the CFD-DEM coupling approach was applied to determine movement trajectories and airflow fields. The impacts of rapeseed varieties and rotational speed on seeding performance were investigated by bench tests. The results showed that the seed feeding quantity increased with the increase of model-hole’s length, depth and section size. Under the model-hole’s depth of 3.0 mm, the type Ⅱ model-hole and model-hole’s length of 10 mm, both the variation coefficient of seed feeding quantity and hill diameter were lower which meet the seeding quantity requirement of 2 seeds in each hill. It was revealed that the seed population migrated in a large airflow velocity area and the distribution was uniform. The bench tests indicated that rapeseed varieties and rotational speed had a significant effect on the seed feeding quantity in each hill at rotational speed of 10-40 r/min. The variation coefficient of seed feeding quantity in each hill was less than 17.0% for each treatment. The hill diameter, which did not exceed 3.5 cm, tended to reduce with increasing rotational speed. The variation coefficient of seeding quantity in each row and seeding uniformity was less than 6.5% and 32.0%, respectively. Field experiments demonstrated that the seedling was 9-13 plants per meter each row for three rapeseed varieties. The variation coefficient of plants was less than 25.0% for six rows and their yields reached 2761 kg/hm2, which realized the mechanized planting requirements. The results can optimize structure of an air-assisted centralized metering system and improve in seeding performance. Keywords: rapeseed, air-assisted centralized metering device, seed hill feeding, seeding performance DOI: 10.25165/j.ijabe.20211405.5349 Citation: Lei X L, Hu H J, Yang W H, Liu L Y, Liao Q X, Ren W J. Seeding performance of air-assisted centralized seed-metering device for rapeseed. Int J Agric & Biol Eng, 2021; 14(5): 79–87.References
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[17] Lei X L, Liao Y T, Li Z D, Zhang W Y, Cao X Y, Li S S, et al. Effects of seed layer thickness on seed filling performance of seed feeding device for rapeseed and wheat. Transactions of the CSAE, 2016; 32(6): 11–19. (in Chinese)
[18] Lei X L, Liao Y T, Liao Q X. Simulation of seed motion in seed feeding device with CFD-DEM coupling approach for rapeseed and wheat. Computers and Electronics in Agriculture, 2016; 131, 29–39.
[19] Lei X L, Liao Y T, Wang L, Wang D, Yao L, Liao Q X. Simulation of gas-solid two-phase flow and parameter optimization of pressurized tube of air-assisted centralized metering device for rapeseed and wheat. Transactions of the CSAE, 2017; 33(19): 67–75. (in Chinese)
[20] Lei X L, Liao Y T, Zhang Q S, Wang L, Liao Q X. Numerical simulation of seed motion characteristics of distribution head for rapeseed and wheat. Computers and Electronics in Agriculture, 2018; 150: 98–109.
[21] Lei X L, Liao Y T, Cong J L, Wang L, Zhang Q S, Liao Q X. Parameter optimization and experiment of air-assisted centralized seed-metering device of direct seeding machine for rape and wheat. Transactions of the CSAE, 2018; 34(12): 16–26. (in Chinese)
[22] Lei X L, Yang W H, Yang L J, Liu L Y, Liao Q X, Ren W J. Design and experiment of seed hill feeding device in pneumatic centralized metering device for hybrid rice. Transactions of the CSAM, 2018; 49(11): 58–67. (in Chinese)
[23] Norma, ISO 7256/2, 1984. Sowing equipment-test methods-seed drills for sowing in lines.
[2] Liao Q X, Lei X L, Liao Y T, Ding Y C, Zhang Q S, Wang L. Research progress of precision seeding for rapeseed. Transactions of the CSAM, 2017; 48(9): 1–16. (in Chinese)
[3] Kumar V J F, Durairaj C D. Influence of head geometry on the distributive performance of air-assisted seed drills. Journal of Agricultural Engineering Research, 2000; 75(1): 81–95.
[4] Yatskul A, Lemiere J P, Cointult F. Influence of the divider head functioning conditions and geometry on the seed’s distribution accuracy of the air-seeder. Biosystems Engineering, 2017; 161: 120–134.
[5] Yatskul A, Lemiere J P. Establishing the conveying parameters required for the air-seeders. Biosystems Engineering, 2018; 166: 1–12.
[6] Mudarisova S, Badretdinova I, Rakhimov Z, Lukmanov R, Nurullin E. Numerical simulation of two-phase “Air-Seed” flow in the distribution system of the grain seeder. Computers and Electronics in Agriculture, 2020; 168, 105151.
[7] Chang J L, Zhang X H. Design and test of one-step centralized type pneumatic seeding system. Transactions of the CSAE, 2011; 27(1): 136–141. (in Chinese)
[8] Zhang X H, Wang Y Z, Zhang L, Peng C J, Fan G J. Design and experiment of wheat pneumatic centralized seeding distributing system. Transactions of the CSAM, 2018; 49(3): 59–67. (in Chinese)
[9] Li Z H, Wang D C, Liu G L, Yang M S, Wang Z H. Experimental study on sowing seeds by air-stream metering mechanism. Transactions of the CSAE, 2009; 25(1): 89–93.
[10] Li Z H, Wang D C, Liu G L, Yang M S, Wang Z H. CFD Simulation and improvement of air stream distributive metering device. Transactions of the CSAM, 2009; 40(3): 64–68. (in Chinese)
[11] Dai Y Z, Luo X W, Wang Z M, Zeng S, Zang Y, Yang W W, et al. Design and experiment of rice pneumatic centralized seed distributor. Transactions of the CSAE, 2016; 32(24): 36–42. (in Chinese)
[12] Zhao J H, Liu L J, Yang X J, Du J W, Zhao Z B. Design and experiment of pneumatic seeding system of teff seeder. Transactions of the CSAM, 2018; 49(S1): 101–107. (in Chinese)
[13] Qi B, Zhang W Y, Yu S S, Ji Y, Li K, Zhang S Y. Establishment of seeding amount control model for centralized pneumatic metering system for rice. Transactions of the CSAM, 2018; 49(S1): 125–131. (in Chinese)
[14] Yu X R, Geng D Y, Du R C, Jin C L, Yang S D, Lu X F. Design and experiment of wheat planter by pneumatic conveying with no-tillage. Transactions of the CSAM, 2018; 49(s1): 141–148. (in Chinese)
[15] Wang B L, Luo X W, Wang Z M, Zheng L, Zhang M H, Dai Y Z, Xing H. Design and field evaluation of hill-drop pneumatic central cylinder direct-seeding machine for hybrid rice. Int J Agric & Biol Eng, 2018; 11(6): 33–40.
[16] Lei X L, Liao Y T, Li Z D, Cao X Y, Li S S, Wei Y P, Liao Q X. Design and experiment of seed feed device in air-assisted centralized metering device for rapeseed and wheat. Transactions of the CSAE, 2015; 31(20): 10–18. (in Chinese)
[17] Lei X L, Liao Y T, Li Z D, Zhang W Y, Cao X Y, Li S S, et al. Effects of seed layer thickness on seed filling performance of seed feeding device for rapeseed and wheat. Transactions of the CSAE, 2016; 32(6): 11–19. (in Chinese)
[18] Lei X L, Liao Y T, Liao Q X. Simulation of seed motion in seed feeding device with CFD-DEM coupling approach for rapeseed and wheat. Computers and Electronics in Agriculture, 2016; 131, 29–39.
[19] Lei X L, Liao Y T, Wang L, Wang D, Yao L, Liao Q X. Simulation of gas-solid two-phase flow and parameter optimization of pressurized tube of air-assisted centralized metering device for rapeseed and wheat. Transactions of the CSAE, 2017; 33(19): 67–75. (in Chinese)
[20] Lei X L, Liao Y T, Zhang Q S, Wang L, Liao Q X. Numerical simulation of seed motion characteristics of distribution head for rapeseed and wheat. Computers and Electronics in Agriculture, 2018; 150: 98–109.
[21] Lei X L, Liao Y T, Cong J L, Wang L, Zhang Q S, Liao Q X. Parameter optimization and experiment of air-assisted centralized seed-metering device of direct seeding machine for rape and wheat. Transactions of the CSAE, 2018; 34(12): 16–26. (in Chinese)
[22] Lei X L, Yang W H, Yang L J, Liu L Y, Liao Q X, Ren W J. Design and experiment of seed hill feeding device in pneumatic centralized metering device for hybrid rice. Transactions of the CSAM, 2018; 49(11): 58–67. (in Chinese)
[23] Norma, ISO 7256/2, 1984. Sowing equipment-test methods-seed drills for sowing in lines.
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Published
2021-10-13
How to Cite
Lei, X., Hu, H., Yang, W., Liu, L., Liao, Q., & Ren, W. (2021). Seeding performance of air-assisted centralized seed-metering device for rapeseed. International Journal of Agricultural and Biological Engineering, 14(5), 79–87. Retrieved from https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/5349
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Power and Machinery Systems
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