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对4种尖头型免耕播种开沟器的工作性能进行了测试，分析了开沟器的工作阻力和对种行土壤物理特性的影响。试验结果表明，除宽翼型开沟器不适合免耕播种要求外，其他3种均可基本满足要求。
The working performance of four kinds of pointed no-till sowing openers was tested, and the working resistance of opener and the effect on soil physical characteristics were analyzed. The test results show that, except for the wide airfoil opener is not suitable for no-tillage sowing requirements, the other three can basically meet the requirements.