沈阳农业大学学报2025，Vol.56Issue(1)：48-58,11.DOI:10.3969/j.issn.1000-1700.2025.01.006
基于玉米条耕技术的碎土镇压整地机设计与试验
Design and Testing of Soil Crushing and Compacting Machine Based on Corn Strip Tillage Technology
摘要
Abstract
[Objective]At present,the soil breaking in the domestic corn strip ploughing operation has the problem that the soil is finely broken after rotary ploughing,and the moisture loss is large,which is easy to cause dust on the topsoil of the farmland,resulting in serious water and soil erosion.At the same time,the compaction of soil can not adjust the pressure according to the change of soil moisture,resulting in soil moisture can not meet the needs of crop sowing,which affects the quality of sowing.Therefore,a strip-till cultivator combining disc harrow crushing and variable pressure compaction operations was designed.[Methods]A static analysis of the drive shaft was carried out to determine the reasonableness of the design.The influence of the number of counterweight blocks on the compression strength was tested,and a three-factor,three-level orthogonal test was conducted with the travelling speed,harrow depth and harrow blade spacing as the test factors,and the soil crushing rate as the test index.At the same time,a quadratic regression orthogonal test was carried out to verify the combination with travelling speed,suppression strength and harrow depth as test factors,and soil firmness and surface flatness as test indicators.[Results]It was determined that a compressive strength of 22.1 kPa could be generated when three counterweight blocks were configured,which met the conditions for corn emergence.The main influencing factors of soil crushing performance were travelling speed,harrow blade spacing and harrow depth;the optimal combination of working parameters was travelling speed of 3 km·h-1,harrow depth of 10 cm,and harrow blade spacing of 140 mm,then the soil crushing rate was 73.15%,which was the optimal crushing effect of this experiment.The main influencing factors of soil firmness and surface flatness were obtained as compression pressure,harrow depth and forward speed;the optimal combination of parameters was determined as forward speed of 3 km·h-1,compression strength of 21 kPa,harrow depth of 8 cm,and then,the soil firmness was 53.4 kPa,and surface flatness was 2.7 cm,which were in line with the relevant standards in the industry.[Conclusion]This study can provide a reference for the design and optimization of soil crushing and compaction strip-tillage implements,and lay a foundation for improving the effectiveness of maize strip-tillage operations.关键词
条耕技术/碎土镇压整地机/圆盘耙片/土壤破碎率/地表平整度Key words
strip tillage technology/soil crushing and compaction machine/disc harrow blade/soil crushing rate/surface flatness分类
农业工程引用本文复制引用
施继红,刘贞彤,黄东岩,孟宪章,屈鑫誉,王景立,朱凤武,马云海..基于玉米条耕技术的碎土镇压整地机设计与试验[J].沈阳农业大学学报,2025,56(1):48-58,11.基金项目
国家重点研发计划项目(2023YFD1500404) （2023YFD1500404）
长春市科技发展计划项目(21ZGM04) （21ZGM04）
