The present invention is formed along the vertical direction at one end of the ground connection portion provided with a plurality of through-holes into which the fixing member is inserted and the ground connection portion provided in the horizontal direction, and a seedling withdrawal portion formed open so that the seedlings can be withdrawn is provided at the top. Includes a portion, and characterized in that the protection unit is provided with a seedling incision for inserting the seedlings. In addition, in the present invention, the protection unit includes a vertical surface portion formed integrally, and the vertical surface portion is characterized by a seedling protective device formed with an incision for insertion along the length direction. In addition, in the present invention, the protection unit includes a pair of vertical plates facing each other having a semicircular cut groove in the upper center and a connection part connecting the upper ends of the pair of vertical plates at one side of the cut groove It features a seedling protection. In addition, in the present invention, the ground connection portion is characterized in that the seedling protection is provided on either side of the inner or outer side of the pair of facing vertical plates. In addition, in the present invention, the opening is provided at the top and characterized in that the seedling protection device including a seedling protection bag capable of wrapping the protection unit. Therefore, according to the present invention, since the protection unit wrapping the seedlings can act as a windshield during the cold winter, there is an effect of improving the survival of the seedlings. In addition, according to a preferred embodiment of the present invention, there is an effect that it is possible to mow the weeds without damaging the seedlings because the worker can easily find the seedling protection during mowing work. In addition, according to a preferred embodiment of the pres
