关键词: 秸秆覆盖, 混埋还田, 圆盘耙单体, 秸秆堵塞, 机具通过性, 正交试验

Abstract: In order to study the technology of returning straw mulch to farmland, it is critical to research the land preparation machine of disc harrow. In the process of machine research and development, it is necessary to solve the blockage caused by the influence of straw. In this paper, the single factor experiment and three factors three levels orthogonal experiment were conducted. The impact law of exclusive arrangement parameters of objective connected disk rake on the straw blockage was explored. Three factors were determined by the single factor test: the disc spacing was 275 mm, the beam spacing was 900 mm, and the dislocation spacing was applicable. The results of extreme value analysis of orthogonal test showed that the influence of rake row parameters on machine blockage was in the order of rake row spacing B, beam row spacing L and dislocation spacing S.  The preferred combination of the tool passing was a rake spacing of 325 mm, beam spacing of 1 100 mm, and dislocation spacing of 0 mm. Results of orthogonal test variance analysis showed that implement arrangement parameters of rake spacing and beam spacing had a significant impact on the implementation blockage, while the misplacement spacing has no significant impact on the implementation blockage. The orthogonal test regression results obtained the passing regression equation T=0.833B+0.667L. The test results provide data reference for the development and design of the disc brake.

Key words: straw mulching, burying and returning to field, disc harrow monomer, straw mulching, machine passability, orthogonal test