• CN:11-2187/TH
  • ISSN:0577-6686

›› 2008, Vol. 44 ›› Issue (9): 177-182.

• 论文 • 上一篇    下一篇



  1. 中国农业大学工学院
  • 发布日期:2008-09-15

Design and Experiment on a Wedge Shaped No-tillage Opener

WANG Qingjie;YAO Zonglu;GAO Huanwen;LI Hongwen;WANG Xiaoyan   

  1. College of Engineering, China Agricultural University
  • Published:2008-09-15

摘要: 设计楔刀型免耕开沟器。楔刀型免耕开沟器由锋利的前刀刃和带有侧翼的底座两部分组成,前刀刃与底座之间采用内螺栓连接,磨损后能够方便更换。开沟器设计完成后在玉米秸秆粉碎地进行阻力和动力消耗试验,试验结果表明,装有锋利前刀刃的楔刀型免耕开沟器土壤扰动量约为15%~25%,能够减少表层土壤扰动,秸秆覆盖率降低了10%~20%,能够满足免耕播种的要求。相比尖角型开沟器,沟槽内的土壤容重明显降低;开沟深度在10 cm时,开沟阻力降低13.2%,免耕播种机单位面积耗油量降低了15%,能够减少拖拉机的动力消耗。因此楔刀型免耕开沟器解决了开沟深度在10 cm时阻力和动力消耗大的问题,并且能够创造疏松的种床,对免耕播种机的推广应用具有重要意义。

关键词: 保护性耕作, 免耕开沟器, 种床

Abstract: A wedge-shaped no-tillage opener consisting of sharp front knife edge and pedestal with lateral wings has been designed. The front knife is connected with the pedestal by means of inner bolts and can be conveniently changed when it is abraded. Tests of resistance and power consumption are carried out in the field covered with maize straw. Test results show that the wedged-shaped no-tillage opener can reduce the surface soil disturbance to between 15% and 25%, and reduce the straw coverage rate by 10%~20%, so it can satisfy the requirement of no-tillage sowing. In comparison to the tine opener, it has the advantages that the soil bulk density is decreased significantly, the resistance and the fuel consumption are reduced by 13.2% and 15% separately when the depth of furrow opening is 10 cm, thus reducing the power consumption of tractor. So the wedged-shaped no-tillage opener solves the problem of high resistance and power consumption when the depth of furrow opening is 10 cm, and creates the loose seedbed, and which has important significance to the popularization and application of no-tillage seeders in China.

Key words: Conservation tillage, No-tillage furrow opener, Seedbed