摘要
为了优化垂直分层种肥施开沟器的结构参数，提高免耕播种机的作业质量，以种肥间距为作业指标，采用正交试验设计的方法，研究其结构参数对工作性能的影响。通过对试验结果的极差和方差分析，得出影响种肥间距的因素主次为：开沟器宽度〉开沟器I段下边沿与II段下边沿的高度差H〉开沟器I段下边沿长度；由方差分析知因素A×C的交互作用对指标的影响呈极显著水平，采用交互作用表进一步分析因素的优水平，得出较优参数为：开沟器宽度为6．0cm、开沟器I段下边沿与II段下边沿的高度差H为4．0cm、开沟器I段下边沿长度为3．5cm。重复试验表明：种肥间距在3．5～4．5cm之间。参数优化后，机具播深一致性好，无种肥混施现象。
In order to optimize structure parameters of furrow opener of a vertical stratified application of fertilizer and seed, improve work quality of no tillage planter, using vertical distance between seed and fertilizer as index, with the method of orthogonal experimental design, the effect of structural parameters on its working performance was studied. Through the experiment test for range analysis and variance analy- sis, concluding the important order of the factors influencing the deviation value is as follows： the width of furrow opener, height difference H between furrow opener I section under edge and II section under edge, the length of furrow opener I section under edge. By the analysis of va- riance of knowledge, effects of interaction of factors A, C for the index significantly, using the interactive table further analysis of excellent level factors, obtain optimization of structure parameters is as follows ： the width of furrow opener is 6.0cm, height difference H between furrow opener I section under edge and II section under edge is 4.0 cm, the length of furrow opener I section under edge is 3.5cm. Repeat the test showed that ： vertical distance between seed and fertilizer is 3.5 - 4.5 cm. After parameters optimization, sowing depth uniformity is good, no seed and fertilizer mixed phenomenon.
出处
《安徽农业科学》
CAS
2015年第30期337-339,共3页
Journal of Anhui Agricultural Sciences
基金
甘肃省农业科技成果转化资金计划项目(144NCNF177)
甘肃省教育厅项目(2014A-096)
关键词
播种机
开沟器
种肥间距
正交试验
Planter
Furrow opener
Vertical distance between seed and fertilizer
Orthogonal experiment
