摘要
为解决现有起垄机具作业效果达不到蔬菜苗床整理要求的问题,结合菜地整理农艺要求,采用双刀轴分层耕作原理,设计了一款蔬菜作畦机,分析并确定了关键工作部件的结构参数.以机具前进速度和动力输出轴转速为影响因子设计了田间正交试验,试验结果表明:该机具一次作业能够完成深层土壤旋耕、表层土壤精整、起畦和畦面镇压等多项工序;所选的两因素对作业质量都有极显著影响,较优的工作参数组合为前进速度2.5 km·h-1,动力输出轴转速1 000 r·min-1,碎土率达92.58%,平整度为2.24 cm.在相同工况下通过与传统旋耕起垄复式作业机的作业性能对比,作畦机作业耕深增加2 cm左右,碎土率提高8.87%,畦面平整度降低2.56 cm,明显提升了作畦质量.
To solve the problem that the existing tillage machine can’t meet the ridging requirements for vegetable field,based on the tillage agronomic requirements of leaf vegetable cultivation,a bed former was designed according to the principles of double layered cutting and secondary fine soil breaking. The overall structure and the operating principle of bed former were described respectively. Two main affecting factors on working quality of forward velocity of machine and rotary speed of PTO were evaluated by the L9（ 32） orthogonal test. The test results show that the bed former can integrate multiple functions of deep tillage,secondary crushing,ridge forming and ridge shaping simultaneously,which meets the overall design requirements. The selected two factors have significant impact on working quality. The variance analysis results show that the suitable operation conditions are that the forward velocity of machine is 2. 5 km · h- 1,and the rotary speed of PTO is 1 000 r · min- 1. Under the optizized conditions,ground-breaking rate and flatness of ridge surface can reach 92. 58% and 2. 24 cm,respectively. Compared with classical combined ridging machine,by the proposed implement,the tilling depth is increased by 2 cm with increased ground-breaking rate by 8. 87%,and the flatness of ridge surface is reduced by 2. 56 cm with obviously improved ridge quality.
出处
《江苏大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2016年第3期288-295,共8页
Journal of Jiangsu University：Natural Science Edition
基金
国家科技支撑计划项目(2013BAD08B03)
国家公益性行业(农业)科研专项基金资助项目(201403032)
江苏省农业科技自主创新资金资助项目(CX(15)1033)
关键词
作畦机
整地
正交试验
设计
蔬菜地
bed former
tilling
orthogonal test
design
vegetable field
