农业机械学报2025，Vol.56Issue(5)：202-212,11.DOI:10.6041/j.issn.1000-1298.2025.05.019
苏打盐碱土秸秆深埋机设计与试验
Design and Experiment of Deep Burial Machine on Sodic Saline-alkali Soil
摘要
Abstract
In response to the low permeability of sodic saline soils and the limited adaptability of conventional reclamation equipment,a specialized machine was designed for saline-alkali soil improvement based on deep straw incorporation.Soil column experiments revealed that filling the 20～40 cm soil layer with straw increased permeability by 59.52％.A stepped drag-reduction optimization of the trenching device was conducted by using the discrete element method(DEM)and central composite design(CCD).The results showed that at subsoiler shovel working depth of 38.4 cm,penetration angle of 24.7°,and blade angle of 60.1°,the trenching shovel resistance reached 9 752.5 N,while the total system resistance was 12 401.9 N,representing decreases of 27.7％and 0.4％compared with that of the control,respectively.Field validation of the optimized parameter combination revealed that the total system resistance reached 14 500.5 N,a 2.6％increase compared with that of the control,whereas the trenching shovel resistance dropped by 16.5％to 11 801.8 N.The average trenching depth was 39.1 cm(coefficient of variation 5.06％),and the average trenching width was 9.4 cm(coefficient of variation 5.16％),demonstrating a high degree of operational consistency.The straw burial qualification rate was 80％,indicating that the equipment was capable of effectively accomplishing the deep burial task.Through structural innovation and parameter optimization,the research can effectively address the high-resistance,low-efficiency issues inherent to trenching in sodic saline soils,providing a reliable technical and equipment solution for saline-alkali land improvement.关键词
苏打盐碱土/秸秆深埋机/离散元法/阶梯减阻/田间试验Key words
sodic saline-alkali soil/deep burial machine/discrete element method/stepped drag-reduction/field experiment分类
农业工程引用本文复制引用
王宇星,王晓燕,李洪文,王庆杰,高世杰,刘迪..苏打盐碱土秸秆深埋机设计与试验[J].农业机械学报,2025,56(5):202-212,11.基金项目
国家重点研发计划项目(2023YFD1500602-03) （2023YFD1500602-03）
