Row marker suitable for corn test seeding

The utility model provides a row marker suitable for corn test seeding, which comprises a horizontally arranged column body, two ends of the column body are respectively sleeved with a sleeve, the two sleeves can horizontally move on the column body, and the two sleeves are respectively provided with a locking mechanism for locking the moving positions of the sleeves; the device further comprises three supporting rods which are arranged in parallel, one supporting rod is fixed to the material conveying pipe, the other two supporting rods are symmetrically fixed to the two sleeves, and the other ends of the three supporting rods are each provided with a scribing wheel. According to the utility model, three lines can be marked at the same time, and the distance among the three marking wheels can be adjusted by quickly moving the two sleeves on the column body according to the test requirements, so that the adjustment of the marking spacing is realized. 本实用新型提供了一种适用于玉米试验播种的划行器，包括水平设置的柱体，柱体的两端分别套装有套管，两个套管能在柱体上水平移