| 摘要: |
| 【目的】对4LYZ-2型油菜联合收获机的作业适应性、作业质量进行研究，为该机械的改进和完善及油菜机械收获技术的推广提供参考。【方法】以油菜“甘杂1号”为供试品种，在渭北高原油菜大面积种植区域，选择具有代表性的试验区，设置不同种植密度和成熟度的单因素试验及大田收获试验，对4LYZ-2型油菜联合收获机的最佳收获条件和作业质量进行评价与分析。【结果】油菜机械收获的最佳成熟度为90%，适宜的种植密度为33.0万株/hm2。4LYZ-2型油菜联合收获机收获时的平均含杂率为7.3%，平均破碎率为0.2%。收获的主要损失部位为割台，其收获损失占总损失的64.4%；割台的立刀部位损失最大，占割台总损失的47.2%，其次是排草口和排糠口的损失，分别占割台总损失的32.6%和20.2%。【结论】除含杂率略高外，4LYZ-2型油菜联合收获机的其余各项作业性能均符合农业部标准要求。 |
| 关键词: 4LYZ-2型油菜联合收获机 油菜 机械化收获 渭北高原 |
| DOI： |
| 分类号: |
| 基金项目:陕西省农业科技攻关项目（陕农机办（2008）129号） |
|
| Experimental research on rape mechanical harvesting in Weibei Plateau Area |
|
|
| Abstract: |
| 【Objective】The study aimed to research the operation qualities and optimum planting conditions of 4LYZ-2 rape combined-harvester,and to improve the harvester and its wide application to rape harvesting.【Method】 In selected typical experimental area,using “Ganza No.1” for tested cultivars,operation qualities and optimum planting conditions were tested and analyzed using single factor experiments and land trial.【Result】The study showed that optimum maturity for mechanical harvesting was over 90% and the suitable planting density was about 33.0×104/hm2.The average impurity rate and broken rate of the harvester were 7.3% and 0.2%,respectively.The main harvesting loss part was the header,accounting for 64.4% of total loss.The vertical knife parts had the major loss to the total in the header with a contribution of 47.2%.The losses of grass discharge part and bran discharging part had the second and the third losing rates,contributing to 32.6% and 20.2% of the total header loss,respectively.【Conclusion】All operation qualities of 4LYZ-2 rape combined-harvester,except the slightly higher impurity rate,meet the standard requirements of the Ministry of Agriculture. |
| Key words: 4LYZ-2 rape combined-harvester rape mechanical harvesting Weibei Plateau Area |
