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Experimental Study on Seeding Wheat Performance of the Wide Planter Pneumatic Seeding System

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  2021 ASABE Annual International Virtual Meeting  2100777.(doi:10.13031/aim.202100777)
Authors:   Yanjun Li, Lijing Liu, Jin Chen, Jinhui Zhao, Shuzhe Yu, Chao Ma
Keywords:   pneumatic seeding,seeding system,seeding performance,experiment.

Abstract. To explore the influence of the main working parameters of the air conveying seed metering system on the seed metering performance, the wheat seed metering experiment was carried out, and the quadratic regression general rotation combination design experiment was adopted, taking the sowing rate, air volume and seed pipe length as the influencing factors. The bench test was carried out by taking the stability variation coefficient of total discharge and the consistency variation coefficient of each row discharge as the test index. The variance analysis and response surface analysis of the test data is carried out by using Design-expert software, and it is found that the factor affecting the stability variation coefficient of total displacement is the sowing rate, and the order of the primary and secondary factors affecting the consistency variation coefficient of each row discharge is sowing rate, the air volume and seed pipe length.The combination of working parameters in which the coefficient of variation tends to be stable is obtained: sowing rate 198.8kg/hm2~270 kg/hm2, air volume 7.92 m3/min~8.55 m3/min, seed tube length greater than 3.02m, the coefficient of variation of total discharge stability is 0.432%~0.536%, and the consistency coefficient of variation of each row is 2.711%~2.914%. The experimental verification was carried out under the combination of working parameters, and the seed fragmentation rate was 0.39% to 0.42%, which met the standard and agronomic requirements.

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